diff --git a/packages/react-navigation/src/routers/StackRouter.js b/packages/react-navigation/src/routers/StackRouter.js
index eb59153f..56d6af19 100644
--- a/packages/react-navigation/src/routers/StackRouter.js
+++ b/packages/react-navigation/src/routers/StackRouter.js
@@ -529,7 +529,15 @@ export default (routeConfigs, stackConfig = {}) => {
         }
         const nextResult = result || {};
         const paramName = key.name;
-        nextResult[paramName] = matchResult;
+
+        let decodedMatchResult;
+        try {
+          decodedMatchResult = decodeURIComponent(matchResult);
+        } catch (e) {
+          // ignore `URIError: malformed URI`
+        }
+
+        nextResult[paramName] = decodedMatchResult || matchResult;
         return nextResult;
       }, queryParams);
 
diff --git a/packages/react-navigation/src/routers/__tests__/StackRouter-test.js b/packages/react-navigation/src/routers/__tests__/StackRouter-test.js
index 5d2e4376..c03d59ca 100644
--- a/packages/react-navigation/src/routers/__tests__/StackRouter-test.js
+++ b/packages/react-navigation/src/routers/__tests__/StackRouter-test.js
@@ -1506,6 +1506,28 @@ describe('StackRouter', () => {
     );
   });
 
+  test('URI encoded string get passed to deep link', () => {
+    const uri = 'people/2018%2F02%2F07';
+    const action = TestStackRouter.getActionForPathAndParams(uri);
+    expect(action).toEqual({
+      routeName: 'person',
+      params: {
+        id: '2018/02/07',
+      },
+      type: NavigationActions.NAVIGATE,
+    });
+
+    const malformedUri = 'people/%E0%A4%A';
+    const action2 = TestStackRouter.getActionForPathAndParams(malformedUri);
+    expect(action2).toEqual({
+      routeName: 'person',
+      params: {
+        id: '%E0%A4%A',
+      },
+      type: NavigationActions.NAVIGATE,
+    });
+  });
+
   test('Querystring params get passed to nested deep link', () => {
     // uri with two non-empty query param values
     const uri = 'main/p/4/list/10259959195?code=test&foo=bar';