diff --git a/app.go b/app.go
index 37416d5..c399a5c 100644
--- a/app.go
+++ b/app.go
@@ -175,6 +175,8 @@ const (
 	keyExtClublogAutoUpload = "extsvc.clublog.auto_upload"
 	keyExtClublogUploadMode = "extsvc.clublog.upload_mode"
 
+	keyExtPotaToken = "extsvc.pota.token" // pota.app session token for hunter-log sync
+
 	keyExtLoTWTQSLPath     = "extsvc.lotw.tqsl_path"
 	keyExtLoTWStationLoc   = "extsvc.lotw.station_location"
 	keyExtLoTWForceCall    = "extsvc.lotw.force_station_callsign" // override STATION_CALLSIGN at sign time (e.g. F4BPO/P on the F4BPO cert)
@@ -1550,6 +1552,102 @@ func (a *App) AwardCellQSOs(code, ref, band string) ([]qso.QSO, error) {
 	return out, err
 }
 
+// GetPOTAToken returns the stored pota.app session token (for the settings UI).
+func (a *App) GetPOTAToken() string {
+	if a.settings == nil {
+		return ""
+	}
+	t, _ := a.settings.Get(a.ctx, keyExtPotaToken)
+	return t
+}
+
+// SavePOTAToken stores the pota.app session token used to sync the hunter log.
+func (a *App) SavePOTAToken(token string) error {
+	if a.settings == nil {
+		return fmt.Errorf("db not initialized")
+	}
+	return a.settings.Set(a.ctx, keyExtPotaToken, strings.TrimSpace(token))
+}
+
+// POTASyncResult summarises a hunter-log sync run for the UI.
+type POTASyncResult struct {
+	Fetched      int `json:"fetched"`       // hunter-log entries downloaded
+	Updated      int `json:"updated"`       // QSOs newly stamped with a park ref
+	AlreadyTagged int `json:"already_tagged"` // matched but already had a pota_ref
+	Unmatched    int `json:"unmatched"`     // no local QSO matched
+}
+
+// SyncPOTAHunterLog downloads the user's POTA hunter log and stamps pota_ref on
+// matching local QSOs (same callsign + band within ±5 min), filling only QSOs
+// that don't already carry a park reference.
+func (a *App) SyncPOTAHunterLog() (POTASyncResult, error) {
+	if a.qso == nil || a.settings == nil {
+		return POTASyncResult{}, fmt.Errorf("db not initialized")
+	}
+	token, _ := a.settings.Get(a.ctx, keyExtPotaToken)
+	entries, err := pota.FetchHunterLog(a.ctx, token, applog.Printf)
+	if err != nil {
+		return POTASyncResult{}, err
+	}
+	var all []qso.QSO
+	if err := a.qso.IterateAll(a.ctx, func(q qso.QSO) error {
+		all = append(all, q)
+		return nil
+	}); err != nil {
+		return POTASyncResult{}, err
+	}
+	idx := map[string][]int{}
+	for i := range all {
+		idx[potaMatchKey(all[i].Callsign, all[i].Band)] = append(idx[potaMatchKey(all[i].Callsign, all[i].Band)], i)
+	}
+
+	const window = 5 * time.Minute
+	res := POTASyncResult{Fetched: len(entries)}
+	toUpdate := map[int]struct{}{}
+	for _, e := range entries {
+		if e.Date.IsZero() {
+			res.Unmatched++
+			continue
+		}
+		best, bestEmpty, found := -1, false, false
+		var bestDiff time.Duration
+		for _, i := range idx[potaMatchKey(e.Worked, e.Band)] {
+			diff := all[i].QSODate.Sub(e.Date)
+			if diff < 0 {
+				diff = -diff
+			}
+			if diff > window {
+				continue
+			}
+			found = true
+			if best < 0 || diff < bestDiff {
+				best, bestDiff, bestEmpty = i, diff, all[i].POTARef == ""
+			}
+		}
+		switch {
+		case !found:
+			res.Unmatched++
+		case !bestEmpty:
+			res.AlreadyTagged++
+		default:
+			all[best].POTARef = e.Reference // also prevents re-using this QSO
+			toUpdate[best] = struct{}{}
+			res.Updated++
+		}
+	}
+	for i := range toUpdate {
+		_ = a.qso.Update(a.ctx, all[i])
+	}
+	applog.Printf("pota: hunter-log sync — %d fetched, %d updated, %d already, %d unmatched",
+		res.Fetched, res.Updated, res.AlreadyTagged, res.Unmatched)
+	return res, nil
+}
+
+// potaMatchKey indexes a QSO by base callsign + band for hunter-log matching.
+func potaMatchKey(call, band string) string {
+	return pota.BaseCall(call) + "|" + strings.ToLower(strings.TrimSpace(band))
+}
+
 // AwardStatRow is one row of the award statistics matrix (e.g. "CONFIRMED CW"):
 // distinct-reference counts per band, plus Total (distinct on any band) and
 // GrandTotal (sum of the per-band band-slots).
diff --git a/frontend/src/components/SettingsModal.tsx b/frontend/src/components/SettingsModal.tsx
index 7330399..04410cd 100644
--- a/frontend/src/components/SettingsModal.tsx
+++ b/frontend/src/components/SettingsModal.tsx
@@ -3,7 +3,7 @@ import {
   ArrowDown, ArrowUp, ArrowLeft, ArrowRight, Copy, Plus, Star, StarOff, Trash2,
   ChevronDown, ChevronRight,
   User, Database, Radio, Cog, Server, Award, Antenna as AntennaIcon,
-  Compass, Wifi, Construction, UploadCloud,
+  Compass, Wifi, Construction, UploadCloud, Loader2,
 } from 'lucide-react';
 import {
   GetLookupSettings, SaveLookupSettings, ClearLookupCache, TestLookupProvider,
@@ -24,6 +24,7 @@ import {
   GetDatabaseSettings, PickOpenDatabase, PickSaveDatabase, OpenDatabase, MoveDatabase, ResetDatabaseToDefault, QuitApp, CreateDatabase,
   GetQSLDefaults, SaveQSLDefaults,
   GetExternalServices, SaveExternalServices, TestQRZUpload, TestClublogUpload,
+  GetPOTAToken, SavePOTAToken, SyncPOTAHunterLog,
   TestLoTWUpload, ListTQSLStationLocations,
   ComputeStationInfo,
 } from '../../wailsjs/go/main/App';
@@ -481,7 +482,12 @@ export function SettingsModal({ onClose, onSaved, initialSection }: Props) {
   const [stationLocations, setStationLocations] = useState<string[]>([]);
   // Active tab in the External Services panel — lifted here because
   // PANELS[selected]() is called as a function, so panels can't hold hooks.
-  const [extSvcTab, setExtSvcTab] = useState<'qrz' | 'clublog' | 'hrdlog' | 'eqsl' | 'hamqth' | 'lotw'>('qrz');
+  const [extSvcTab, setExtSvcTab] = useState<'qrz' | 'clublog' | 'hrdlog' | 'eqsl' | 'hamqth' | 'lotw' | 'pota'>('qrz');
+  // POTA hunter-log sync (stamps pota_ref on local QSOs from your pota.app log).
+  const [potaToken, setPotaToken] = useState('');
+  const [potaBusy, setPotaBusy] = useState(false);
+  const [potaResult, setPotaResult] = useState<{ ok: boolean; msg: string } | null>(null);
+  useEffect(() => { GetPOTAToken().then((t) => setPotaToken(t || '')).catch(() => {}); }, []);
 
   const [backupCfg, setBackupCfg] = useState<mainModels.BackupSettings>({
     enabled: false, folder: '', rotation: 5, zip: false,
@@ -2123,7 +2129,22 @@ export function SettingsModal({ onClose, onSaved, initialSection }: Props) {
       { k: 'eqsl',    label: 'EQSL' },
       { k: 'hamqth',  label: 'HAMQTH' },
       { k: 'lotw',    label: 'LOTW', ready: true },
+      { k: 'pota',    label: 'POTA', ready: true },
     ];
+
+    async function syncPota() {
+      setPotaBusy(true);
+      setPotaResult(null);
+      try {
+        await SavePOTAToken(potaToken);
+        const r: any = await SyncPOTAHunterLog();
+        setPotaResult({ ok: true, msg: `${r.updated} QSO updated · ${r.already_tagged} already tagged · ${r.unmatched} unmatched (of ${r.fetched} hunter-log entries).` });
+      } catch (e: any) {
+        setPotaResult({ ok: false, msg: String(e?.message ?? e) });
+      } finally {
+        setPotaBusy(false);
+      }
+    }
     const qrz = extSvc.qrz;
     const setQrz = (patch: Partial<ExtServiceCfg>) =>
       setExtSvc((s) => ({ ...s, qrz: { ...s.qrz, ...patch } }));
@@ -2437,6 +2458,37 @@ export function SettingsModal({ onClose, onSaved, initialSection }: Props) {
               </div>
             </div>
           </div>
+        ) : extSvcTab === 'pota' ? (
+          <div className="space-y-4 max-w-2xl">
+            <p className="text-xs text-muted-foreground leading-relaxed">
+              Update your QSOs with the park reference from your <strong>pota.app hunter log</strong>.
+              Paste your session token: log in at <span className="font-mono">pota.app</span>, open the browser
+              DevTools → <strong>Network</strong> tab, click any <span className="font-mono">api.pota.app</span> request,
+              and copy the full <strong>Authorization</strong> header value. The token expires after a while — re-copy it if the sync fails.
+            </p>
+            <div className="grid grid-cols-[170px_1fr] gap-3 items-start">
+              <Label className="text-sm pt-2">Session token</Label>
+              <Textarea
+                value={potaToken}
+                onChange={(e) => setPotaToken(e.target.value)}
+                placeholder="eyJ… (Authorization header from pota.app)"
+                className="font-mono text-[11px] h-20"
+              />
+            </div>
+            <div className="flex items-center gap-3">
+              <Button onClick={syncPota} disabled={potaBusy || !potaToken.trim()}>
+                {potaBusy ? <><Loader2 className="size-4 mr-1.5 animate-spin" /> Syncing…</> : 'Sync hunter log'}
+              </Button>
+              <span className="text-[11px] text-muted-foreground">Matches by callsign + band within ±5 min. Only fills QSOs without a POTA ref.</span>
+            </div>
+            {potaResult && (
+              <div className={cn('text-xs rounded-md px-3 py-2 border',
+                potaResult.ok ? 'border-emerald-300 bg-emerald-50 text-emerald-800' : 'border-destructive/30 bg-destructive/10 text-destructive')}>
+                {potaResult.msg}
+              </div>
+            )}
+            <p className="text-[11px] text-muted-foreground">After a sync, rescan the POTA award to see the new references counted.</p>
+          </div>
         ) : (
           <div className="flex flex-col items-center justify-center text-muted-foreground gap-2 py-16">
             <Construction className="size-10 opacity-30" />
diff --git a/frontend/wailsjs/go/main/App.d.ts b/frontend/wailsjs/go/main/App.d.ts
index 24ee5fc..394d585 100644
--- a/frontend/wailsjs/go/main/App.d.ts
+++ b/frontend/wailsjs/go/main/App.d.ts
@@ -141,6 +141,8 @@ export function GetLogFilePath():Promise<string>;
 
 export function GetLookupSettings():Promise<main.LookupSettings>;
 
+export function GetPOTAToken():Promise<string>;
+
 export function GetQSLDefaults():Promise<main.QSLDefaults>;
 
 export function GetQSO(arg1:number):Promise<qso.QSO>;
@@ -265,6 +267,8 @@ export function SaveOperatingAntenna(arg1:operating.Antenna):Promise<operating.A
 
 export function SaveOperatingStation(arg1:operating.Station):Promise<operating.Station>;
 
+export function SavePOTAToken(arg1:string):Promise<void>;
+
 export function SaveProfile(arg1:profile.Profile):Promise<profile.Profile>;
 
 export function SaveQSLDefaults(arg1:main.QSLDefaults):Promise<void>;
@@ -301,6 +305,8 @@ export function SetUIPref(arg1:string,arg2:string):Promise<void>;
 
 export function SwitchCATRig(arg1:number):Promise<void>;
 
+export function SyncPOTAHunterLog():Promise<main.POTASyncResult>;
+
 export function TestClublogUpload():Promise<string>;
 
 export function TestEmail(arg1:string):Promise<void>;
diff --git a/frontend/wailsjs/go/main/App.js b/frontend/wailsjs/go/main/App.js
index acca4ee..2064837 100644
--- a/frontend/wailsjs/go/main/App.js
+++ b/frontend/wailsjs/go/main/App.js
@@ -254,6 +254,10 @@ export function GetLookupSettings() {
   return window['go']['main']['App']['GetLookupSettings']();
 }
 
+export function GetPOTAToken() {
+  return window['go']['main']['App']['GetPOTAToken']();
+}
+
 export function GetQSLDefaults() {
   return window['go']['main']['App']['GetQSLDefaults']();
 }
@@ -502,6 +506,10 @@ export function SaveOperatingStation(arg1) {
   return window['go']['main']['App']['SaveOperatingStation'](arg1);
 }
 
+export function SavePOTAToken(arg1) {
+  return window['go']['main']['App']['SavePOTAToken'](arg1);
+}
+
 export function SaveProfile(arg1) {
   return window['go']['main']['App']['SaveProfile'](arg1);
 }
@@ -574,6 +582,10 @@ export function SwitchCATRig(arg1) {
   return window['go']['main']['App']['SwitchCATRig'](arg1);
 }
 
+export function SyncPOTAHunterLog() {
+  return window['go']['main']['App']['SyncPOTAHunterLog']();
+}
+
 export function TestClublogUpload() {
   return window['go']['main']['App']['TestClublogUpload']();
 }
diff --git a/frontend/wailsjs/go/models.ts b/frontend/wailsjs/go/models.ts
index 19b7ad9..ff166bd 100644
--- a/frontend/wailsjs/go/models.ts
+++ b/frontend/wailsjs/go/models.ts
@@ -973,6 +973,24 @@ export namespace main {
 	    }
 	}
 	
+	export class POTASyncResult {
+	    fetched: number;
+	    updated: number;
+	    already_tagged: number;
+	    unmatched: number;
+	
+	    static createFrom(source: any = {}) {
+	        return new POTASyncResult(source);
+	    }
+	
+	    constructor(source: any = {}) {
+	        if ('string' === typeof source) source = JSON.parse(source);
+	        this.fetched = source["fetched"];
+	        this.updated = source["updated"];
+	        this.already_tagged = source["already_tagged"];
+	        this.unmatched = source["unmatched"];
+	    }
+	}
 	export class QSLDefaults {
 	    qsl_sent: string;
 	    qsl_rcvd: string;
diff --git a/internal/pota/hunterlog.go b/internal/pota/hunterlog.go
new file mode 100644
index 0000000..69d2063
--- /dev/null
+++ b/internal/pota/hunterlog.go
@@ -0,0 +1,132 @@
+package pota
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"strings"
+	"time"
+)
+
+// hunterLogURL is the authenticated POTA user logbook endpoint (paginated).
+// hunterOnly=1 restricts it to the user's chaser/hunter QSOs.
+const hunterLogURL = "https://api.pota.app/user/logbook?hunterOnly=1&page=%d&size=%d"
+
+// HunterQSO is one entry from the POTA hunter log: a contact the user made with
+// a park activator, carrying the park reference to stamp onto the local QSO.
+type HunterQSO struct {
+	Worked    string    `json:"worked"`    // activator callsign (the station worked)
+	Date      time.Time `json:"date"`      // QSO date/time (UTC)
+	Band      string    `json:"band"`      // ADIF band, e.g. "20m"
+	Mode      string    `json:"mode"`      // logged mode
+	Reference string    `json:"reference"` // park ref, e.g. "US-2072"
+}
+
+// hunterEntry mirrors the POTA API logbook record (fields we use).
+//
+// IMPORTANT: POTA logbook entries come from the ACTIVATOR's uploaded log, so
+// "station_callsign" is the activator (the park station you worked) and
+// "worked_callsign" is YOU (the hunter, whom the activator worked). To match a
+// local QSO — whose callsign field holds the activator — we key on
+// station_callsign, NOT worked_callsign.
+type hunterEntry struct {
+	StationCallsign string `json:"station_callsign"` // the activator (park station)
+	WorkedCallsign  string `json:"worked_callsign"`  // the hunter (you)
+	QSODateTime     string `json:"qsoDateTime"`
+	Band            string `json:"band"`
+	LoggedMode      string `json:"loggedMode"`
+	Reference       string `json:"reference"`
+}
+
+// FetchHunterLog downloads the user's entire POTA hunter log, page by page,
+// using their pota.app session token as the Authorization header. logf may be
+// nil. Returns a friendly error on an expired/invalid token (HTTP 401/403).
+func FetchHunterLog(ctx context.Context, token string, logf func(string, ...any)) ([]HunterQSO, error) {
+	token = strings.TrimSpace(token)
+	if token == "" {
+		return nil, fmt.Errorf("no POTA token — paste it from pota.app (DevTools → Network → Authorization header)")
+	}
+	client := &http.Client{Timeout: 30 * time.Second}
+	const size = 100
+	const maxPages = 5000 // safety bound
+
+	var out []HunterQSO
+	total := -1
+	for page := 1; page <= maxPages; page++ {
+		url := fmt.Sprintf(hunterLogURL, page, size)
+		req, err := http.NewRequestWithContext(ctx, "GET", url, nil)
+		if err != nil {
+			return nil, err
+		}
+		req.Header.Set("Authorization", token)
+		req.Header.Set("Accept", "application/json")
+		resp, err := client.Do(req)
+		if err != nil {
+			return nil, fmt.Errorf("POTA fetch: %w", err)
+		}
+		switch {
+		case resp.StatusCode == http.StatusUnauthorized || resp.StatusCode == http.StatusForbidden:
+			resp.Body.Close()
+			return nil, fmt.Errorf("POTA rejected the token (HTTP %d) — it has likely expired; re-copy it from pota.app", resp.StatusCode)
+		case resp.StatusCode != http.StatusOK:
+			resp.Body.Close()
+			return nil, fmt.Errorf("POTA HTTP %d", resp.StatusCode)
+		}
+		var body struct {
+			Count   int           `json:"count"`
+			Entries []hunterEntry `json:"entries"`
+		}
+		err = json.NewDecoder(resp.Body).Decode(&body)
+		resp.Body.Close()
+		if err != nil {
+			return nil, fmt.Errorf("POTA decode: %w", err)
+		}
+		total = body.Count
+		for _, e := range body.Entries {
+			ref := strings.ToUpper(strings.TrimSpace(e.Reference))
+			// The activator is the station we worked → station_callsign.
+			act := strings.ToUpper(strings.TrimSpace(e.StationCallsign))
+			if act == "" {
+				act = strings.ToUpper(strings.TrimSpace(e.WorkedCallsign)) // fallback
+			}
+			if ref == "" || act == "" {
+				continue
+			}
+			out = append(out, HunterQSO{
+				Worked:    act,
+				Date:      parseHunterTime(e.QSODateTime),
+				Band:      strings.ToLower(strings.TrimSpace(e.Band)),
+				Mode:      strings.ToUpper(strings.TrimSpace(e.LoggedMode)),
+				Reference: ref,
+			})
+		}
+		if logf != nil {
+			logf("pota: hunter log page %d (%d/%d)", page, len(out), total)
+		}
+		if len(body.Entries) == 0 || (total >= 0 && len(out) >= total) {
+			break
+		}
+	}
+	return out, nil
+}
+
+// parseHunterTime parses POTA's qsoDateTime, tolerating ISO variants (with/out
+// 'T', timezone, or fractional seconds). POTA times are UTC.
+func parseHunterTime(s string) time.Time {
+	s = strings.TrimSpace(s)
+	if s == "" {
+		return time.Time{}
+	}
+	for _, layout := range []string{
+		time.RFC3339Nano, time.RFC3339,
+		"2006-01-02T15:04:05.000Z", "2006-01-02T15:04:05Z", "2006-01-02T15:04:05",
+		"2006-01-02 15:04:05.000", "2006-01-02 15:04:05", "2006-01-02 15:04:05Z",
+		"2006-01-02T15:04Z", "2006-01-02T15:04", "2006-01-02 15:04",
+	} {
+		if t, err := time.Parse(layout, s); err == nil {
+			return t.UTC()
+		}
+	}
+	return time.Time{}
+}
diff --git a/internal/pota/pota.go b/internal/pota/pota.go
index cb8f74f..af94030 100644
--- a/internal/pota/pota.go
+++ b/internal/pota/pota.go
@@ -123,6 +123,9 @@ func (c *Cache) Lookup(call string) (Info, bool) {
 	return i, ok
 }
 
+// BaseCall is the exported callsign normaliser used for hunter-log matching.
+func BaseCall(s string) string { return baseCall(s) }
+
 // baseCall normalises a callsign for matching: upper-cased, and when it carries
 // "/" segments (F4BPO/P, HB9/F4BPO) we take the longest segment, which is
 // almost always the home call.