<!--
{
  "availability" : [
    "iOS: 11.0.0 -",
    "iPadOS: 11.0.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.13.0 -",
    "tvOS: 11.0.0 -",
    "visionOS: 1.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "MapKit",
  "identifier" : "/documentation/MapKit/MKMapViewDefaultAnnotationViewReuseIdentifier",
  "metadataVersion" : "0.1.0",
  "role" : "Global Variable",
  "symbol" : {
    "kind" : "Global Variable",
    "modules" : [
      "MapKit"
    ],
    "preciseIdentifier" : "c:@MKMapViewDefaultAnnotationViewReuseIdentifier"
  },
  "title" : "MKMapViewDefaultAnnotationViewReuseIdentifier"
}
-->

# MKMapViewDefaultAnnotationViewReuseIdentifier

The default reuse identifier for your map’s annotation views.

```
let MKMapViewDefaultAnnotationViewReuseIdentifier: String
```

## Discussion

Use this constant to register a default annotation view. This map view uses this default annotation view when your map view’s delegate doesn’t implement the [`mapView(_:viewFor:)`](/documentation/MapKit/MKMapViewDelegate/mapView(_:viewFor:)-8humz) method, or when that method returns `nil`.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)