diff --git a/backend/internal/api/handlers/pagerduty_migration.go b/backend/internal/api/handlers/pagerduty_migration.go
index c705927..7db633c 100644
--- a/backend/internal/api/handlers/pagerduty_migration.go
+++ b/backend/internal/api/handlers/pagerduty_migration.go
@@ -13,12 +13,22 @@ import (
 
 // pdClientFactory is a package-level variable so tests can override it to point
 // the real PagerDuty client at a mock HTTP server.
-var pdClientFactory = func(apiKey string) *pagerduty.Client {
-	return pagerduty.NewClient(apiKey)
+var pdClientFactory = func(apiKey, baseURL string) *pagerduty.Client {
+	return pagerduty.NewClientWithBaseURL(apiKey, baseURL)
+}
+
+// pdBaseURL maps a region string ("us" or "eu") to the PagerDuty API base URL.
+// Defaults to the US endpoint for empty or unrecognised values.
+func pdBaseURL(region string) string {
+	if region == "eu" {
+		return "https://api.eu.pagerduty.com"
+	}
+	return "https://api.pagerduty.com"
 }
 
 type pdMigrationRequest struct {
 	APIKey string `json:"api_key" binding:"required"`
+	Region string `json:"region"`
 	Force  bool   `json:"force"`
 }
 
@@ -57,7 +67,7 @@ func PreviewPagerDutyMigration(
 			return
 		}
 
-		client := pdClientFactory(req.APIKey)
+		client := pdClientFactory(req.APIKey, pdBaseURL(req.Region))
 		if err := client.ValidateAPIKey(); err != nil {
 			c.JSON(http.StatusBadRequest, gin.H{"error": gin.H{"message": err.Error()}})
 			return
@@ -87,7 +97,7 @@ func ImportPagerDutyMigration(
 			return
 		}
 
-		client := pdClientFactory(req.APIKey)
+		client := pdClientFactory(req.APIKey, pdBaseURL(req.Region))
 		if err := client.ValidateAPIKey(); err != nil {
 			c.JSON(http.StatusBadRequest, gin.H{"error": gin.H{"message": err.Error()}})
 			return
diff --git a/backend/internal/api/handlers/pagerduty_migration_test.go b/backend/internal/api/handlers/pagerduty_migration_test.go
index a20967d..797af53 100644
--- a/backend/internal/api/handlers/pagerduty_migration_test.go
+++ b/backend/internal/api/handlers/pagerduty_migration_test.go
@@ -106,7 +106,7 @@ func newPDMockServer(t *testing.T, cfg pdMockConfig) *httptest.Server {
 func overridePDFactory(t *testing.T, baseURL string) {
 	t.Helper()
 	original := pdClientFactory
-	pdClientFactory = func(apiKey string) *pagerduty.Client {
+	pdClientFactory = func(apiKey, _ string) *pagerduty.Client {
 		return pagerduty.NewClientWithBaseURL(apiKey, baseURL)
 	}
 	t.Cleanup(func() { pdClientFactory = original })
@@ -278,3 +278,36 @@ func TestImportPagerDutyMigration_InvalidAPIKey(t *testing.T) {
 	w := postJSON(r, "/api/v1/migrations/pagerduty/import", map[string]string{"api_key": "bad"})
 	assert.Equal(t, http.StatusBadRequest, w.Code)
 }
+
+// ── Region tests ──────────────────────────────────────────────────────────────
+
+func TestPDBaseURL_DefaultsToUS(t *testing.T) {
+	assert.Equal(t, "https://api.pagerduty.com", pdBaseURL(""))
+	assert.Equal(t, "https://api.pagerduty.com", pdBaseURL("us"))
+}
+
+func TestPDBaseURL_EU(t *testing.T) {
+	assert.Equal(t, "https://api.eu.pagerduty.com", pdBaseURL("eu"))
+}
+
+func TestPreviewPagerDutyMigration_EURegion(t *testing.T) {
+	srv := newPDMockServer(t, pdMockConfig{})
+	overridePDFactory(t, srv.URL)
+
+	db := setupMigrationTestDB(t)
+	r := buildPDRouter(repository.NewScheduleRepository(db), repository.NewEscalationPolicyRepository(db))
+
+	w := postJSON(r, "/api/v1/migrations/pagerduty/preview", map[string]string{"api_key": "tok", "region": "eu"})
+	assert.Equal(t, http.StatusOK, w.Code)
+}
+
+func TestImportPagerDutyMigration_EURegion(t *testing.T) {
+	srv := newPDMockServer(t, pdMockConfig{})
+	overridePDFactory(t, srv.URL)
+
+	db := setupMigrationTestDB(t)
+	r := buildPDRouter(repository.NewScheduleRepository(db), repository.NewEscalationPolicyRepository(db))
+
+	w := postJSON(r, "/api/v1/migrations/pagerduty/import", map[string]string{"api_key": "tok", "region": "eu"})
+	assert.Equal(t, http.StatusOK, w.Code)
+}
diff --git a/frontend/src/api/migrations.ts b/frontend/src/api/migrations.ts
index 53ce797..4cd39f1 100644
--- a/frontend/src/api/migrations.ts
+++ b/frontend/src/api/migrations.ts
@@ -99,6 +99,7 @@ export async function importOnCallMigration(
 
 export interface PDMigrationRequest {
   api_key: string
+  region?: 'us' | 'eu'
   force?: boolean
 }
 
diff --git a/frontend/src/components/migrations/PagerDutyImportPanel.tsx b/frontend/src/components/migrations/PagerDutyImportPanel.tsx
index 471d545..bca02b5 100644
--- a/frontend/src/components/migrations/PagerDutyImportPanel.tsx
+++ b/frontend/src/components/migrations/PagerDutyImportPanel.tsx
@@ -9,6 +9,7 @@ import {
 } from '../../api/migrations'
 
 type Step = 'idle' | 'previewing' | 'preview' | 'importing' | 'done'
+type Region = 'us' | 'eu'
 
 interface PagerDutyImportPanelProps {
   onComplete?: () => void
@@ -22,6 +23,7 @@ function extractError(e: unknown): string {
 export function PagerDutyImportPanel({ onComplete }: PagerDutyImportPanelProps) {
   const [step, setStep] = useState<Step>('idle')
   const [apiKey, setApiKey] = useState('')
+  const [region, setRegion] = useState<Region>('us')
   const [showKey, setShowKey] = useState(false)
   const [force, setForce] = useState(false)
   const [error, setError] = useState('')
@@ -39,7 +41,7 @@ export function PagerDutyImportPanel({ onComplete }: PagerDutyImportPanelProps)
     }
     setStep('previewing')
     try {
-      const data = await previewPagerDutyMigration({ api_key: apiKey.trim() })
+      const data = await previewPagerDutyMigration({ api_key: apiKey.trim(), region })
       setPreview(data)
       setStep('preview')
     } catch (e) {
@@ -53,7 +55,7 @@ export function PagerDutyImportPanel({ onComplete }: PagerDutyImportPanelProps)
     setError('')
     setStep('importing')
     try {
-      const data = await importPagerDutyMigration({ api_key: apiKey.trim(), force })
+      const data = await importPagerDutyMigration({ api_key: apiKey.trim(), region, force })
       setResult(data)
       setStep('done')
     } catch (e) {
@@ -72,9 +74,35 @@ export function PagerDutyImportPanel({ onComplete }: PagerDutyImportPanelProps)
         </div>
       )}
 
-      {/* ── Step 1: API key input ─────────────────────────────────────────── */}
+      {/* ── Step 1: API key + region input ───────────────────────────────── */}
       {(step === 'idle' || step === 'previewing') && (
         <div className="space-y-4">
+          {/* Region selector */}
+          <div>
+            <label className="block text-sm font-medium text-text-primary mb-2">
+              Region
+            </label>
+            <div className="flex gap-4">
+              {(['us', 'eu'] as Region[]).map((r) => (
+                <label key={r} className="flex items-center gap-2 cursor-pointer">
+                  <input
+                    type="radio"
+                    name="pd-region"
+                    value={r}
+                    checked={region === r}
+                    onChange={() => setRegion(r)}
+                    className="accent-brand-primary"
+                  />
+                  <span className="text-sm text-text-primary uppercase">{r}</span>
+                  <span className="text-xs text-text-secondary">
+                    ({r === 'us' ? 'api.pagerduty.com' : 'api.eu.pagerduty.com'})
+                  </span>
+                </label>
+              ))}
+            </div>
+          </div>
+
+          {/* API key */}
           <div>
             <label className="block text-sm font-medium text-text-primary mb-1">
               PagerDuty API Key