diff --git a/packages/types/src/providers/bedrock.ts b/packages/types/src/providers/bedrock.ts
index 58e860dd94a..470902fc920 100644
--- a/packages/types/src/providers/bedrock.ts
+++ b/packages/types/src/providers/bedrock.ts
@@ -405,4 +405,10 @@ export const BEDROCK_REGIONS = [
 	{ value: "sa-east-1", label: "sa-east-1" },
 	{ value: "us-gov-east-1", label: "us-gov-east-1" },
 	{ value: "us-gov-west-1", label: "us-gov-west-1" },
-].sort((a, b) => a.value.localeCompare(b.value))
+	{ value: "custom", label: "Custom region..." },
+].sort((a, b) => {
+	// Keep 'custom' option at the end
+	if (a.value === "custom") return 1;
+	if (b.value === "custom") return -1;
+	return a.value.localeCompare(b.value);
+})
diff --git a/webview-ui/src/components/settings/providers/Bedrock.tsx b/webview-ui/src/components/settings/providers/Bedrock.tsx
index 1839298f9b6..611d20b159b 100644
--- a/webview-ui/src/components/settings/providers/Bedrock.tsx
+++ b/webview-ui/src/components/settings/providers/Bedrock.tsx
@@ -18,12 +18,27 @@ type BedrockProps = {
 export const Bedrock = ({ apiConfiguration, setApiConfigurationField, selectedModelInfo }: BedrockProps) => {
 	const { t } = useAppTranslation()
 	const [awsEndpointSelected, setAwsEndpointSelected] = useState(!!apiConfiguration?.awsBedrockEndpointEnabled)
+	const [isCustomRegion, setIsCustomRegion] = useState(
+		apiConfiguration?.awsRegion && !BEDROCK_REGIONS.some((region) => region.value === apiConfiguration.awsRegion),
+	)
 
 	// Update the endpoint enabled state when the configuration changes
 	useEffect(() => {
 		setAwsEndpointSelected(!!apiConfiguration?.awsBedrockEndpointEnabled)
 	}, [apiConfiguration?.awsBedrockEndpointEnabled])
 
+	// Initialize custom region state on component mount
+	useEffect(() => {
+		if (apiConfiguration?.awsRegion) {
+			const isStandardRegion = BEDROCK_REGIONS.some(
+				(region: { value: string; label: string }) =>
+					region.value === apiConfiguration.awsRegion && region.value !== "custom",
+			)
+			setIsCustomRegion(!isStandardRegion)
+		}
+		// eslint-disable-next-line react-hooks/exhaustive-deps
+	}, []) // Only run on mount - deliberately ignoring apiConfiguration dependency to avoid conflicts
+
 	const handleInputChange = useCallback(
 		<K extends keyof ProviderSettings, E>(
 			field: K,
@@ -88,8 +103,16 @@ export const Bedrock = ({ apiConfiguration, setApiConfigurationField, selectedMo
 			<div>
 				<label className="block font-medium mb-1">{t("settings:providers.awsRegion")}</label>
 				<Select
-					value={apiConfiguration?.awsRegion || ""}
-					onValueChange={(value) => setApiConfigurationField("awsRegion", value)}>
+					value={isCustomRegion ? "custom" : apiConfiguration?.awsRegion || ""}
+					onValueChange={(value) => {
+						if (value === "custom") {
+							setIsCustomRegion(true)
+							setApiConfigurationField("awsRegion", "")
+						} else {
+							setIsCustomRegion(false)
+							setApiConfigurationField("awsRegion", value)
+						}
+					}}>
 					<SelectTrigger className="w-full">
 						<SelectValue placeholder={t("settings:common.select")} />
 					</SelectTrigger>
@@ -101,6 +124,17 @@ export const Bedrock = ({ apiConfiguration, setApiConfigurationField, selectedMo
 						))}
 					</SelectContent>
 				</Select>
+				{isCustomRegion && (
+					<div className="mt-2">
+						<VSCodeTextField
+							value={apiConfiguration?.awsRegion || ""}
+							onInput={handleInputChange("awsRegion")}
+							placeholder="Enter custom region (e.g., us-west-3)"
+							className="w-full">
+							<label className="block font-medium mb-1">Custom Region</label>
+						</VSCodeTextField>
+					</div>
+				)}
 			</div>
 			<Checkbox
 				checked={apiConfiguration?.awsUseCrossRegionInference || false}