diff --git a/android/src/main/java/expo/modules/superwallexpo/SuperwallExpoModule.kt b/android/src/main/java/expo/modules/superwallexpo/SuperwallExpoModule.kt
index 1c194a36..aadeb5f5 100644
--- a/android/src/main/java/expo/modules/superwallexpo/SuperwallExpoModule.kt
+++ b/android/src/main/java/expo/modules/superwallexpo/SuperwallExpoModule.kt
@@ -463,6 +463,10 @@ class SuperwallExpoModule : Module() {
       }
     }
 
+    Function("setLocaleIdentifier") { localeIdentifier: String? ->
+      Superwall.instance.localeIdentifier = localeIdentifier
+    }
+
     AsyncFunction("setIntegrationAttributes") { attributes: Map<String, String>, promise: Promise ->
       scope.launch {
         try {
diff --git a/ios/SuperwallExpoModule.swift b/ios/SuperwallExpoModule.swift
index 9b1338e3..93c7f119 100644
--- a/ios/SuperwallExpoModule.swift
+++ b/ios/SuperwallExpoModule.swift
@@ -360,6 +360,10 @@ public class SuperwallExpoModule: Module {
       }
     }
 
+    Function("setLocaleIdentifier") { (localeIdentifier: String?) in
+      Superwall.shared.localeIdentifier = localeIdentifier
+    }
+
     AsyncFunction("setIntegrationAttributes") { (attributes: [String: String], promise: Promise) in
       var converted: [IntegrationAttribute: String] = [:]
 
diff --git a/src/SuperwallExpoModule.ts b/src/SuperwallExpoModule.ts
index 76ea57ed..0dc2cab0 100644
--- a/src/SuperwallExpoModule.ts
+++ b/src/SuperwallExpoModule.ts
@@ -65,6 +65,7 @@ declare class SuperwallExpoModule extends NativeModule<SuperwallExpoModuleEvents
   preloadAllPaywalls(): void
 
   setLogLevel(level: string): void
+  setLocaleIdentifier(localeIdentifier: string | null): void
 
   setIntegrationAttributes(attributes: IntegrationAttributes): Promise<void>
   getIntegrationAttributes(): Promise<Record<string, string>>
diff --git a/src/compat/index.ts b/src/compat/index.ts
index ce471fc9..467777f1 100644
--- a/src/compat/index.ts
+++ b/src/compat/index.ts
@@ -720,6 +720,17 @@ export default class Superwall {
     await SuperwallExpoModule.setLogLevel(level.toString())
   }
 
+  /**
+   * Sets the locale identifier for the Superwall SDK.
+   * This determines the language used when presenting paywalls.
+   * Can be changed at runtime without needing to reconfigure.
+   *
+   * @param localeIdentifier - The locale identifier (e.g., "en_US", "es_ES"), or `null` to reset to the device locale.
+   */
+  async setLocaleIdentifier(localeIdentifier: string | null): Promise<void> {
+    SuperwallExpoModule.setLocaleIdentifier(localeIdentifier)
+  }
+
   /**
    * Sets attributes for third-party integrations.
    * @param attributes - Object mapping IntegrationAttribute string values to their IDs
diff --git a/src/useSuperwall.ts b/src/useSuperwall.ts
index d16164b9..445b8b98 100644
--- a/src/useSuperwall.ts
+++ b/src/useSuperwall.ts
@@ -163,6 +163,15 @@ export interface SuperwallStore {
    */
   setLogLevel: (level: string) => Promise<void>
 
+  /**
+   * Sets the locale identifier for the Superwall SDK.
+   * This determines the language used when presenting paywalls.
+   * Can be changed at runtime without needing to reconfigure.
+   * @param localeIdentifier - The locale identifier (e.g., "en", "es", "fr"), or `null` to reset to the device locale.
+   * @returns A promise that resolves when the locale identifier is set.
+   */
+  setLocaleIdentifier: (localeIdentifier: string | null) => Promise<void>
+
   /**
    * Sets attributes for third-party integrations.
    * @param attributes - Object mapping IntegrationAttribute string values to their IDs
@@ -320,6 +329,9 @@ export const useSuperwallStore = create<SuperwallStore>((set, get) => ({
   setLogLevel: async (level) => {
     SuperwallExpoModule.setLogLevel(level)
   },
+  setLocaleIdentifier: async (localeIdentifier) => {
+    SuperwallExpoModule.setLocaleIdentifier(localeIdentifier)
+  },
 
   setIntegrationAttributes: async (attributes) => {
     await SuperwallExpoModule.setIntegrationAttributes(attributes)