---
title: CNContactBirthdayKey
framework: contacts
role: symbol
role_heading: Global Variable
path: contacts/cncontactbirthdaykey
---

# CNContactBirthdayKey

The birthday of a contact.

## Declaration

```swift
let CNContactBirthdayKey: String
```

## Discussion

Discussion This key takes a string value.

## See Also

### Birthday

- [CNContactNonGregorianBirthdayKey](contacts/cncontactnongregorianbirthdaykey.md)
- [CNContactDatesKey](contacts/cncontactdateskey.md)