---
title: kCTFontDescriptorLanguageAttribute
framework: Core Text
role: symbol
role_heading: Global Variable
platforms: [iOS 13.0+, iPadOS 13.0+, Mac Catalyst 13.1+, macOS 10.15+, tvOS 13.0+, visionOS 1.0+, watchOS 6.0+]
path: coretext/kctfontdescriptorlanguageattribute
---

# kCTFontDescriptorLanguageAttribute

## Declaration

```swift
let kCTFontDescriptorLanguageAttribute: CFString
```

## Discussion

Discussion The language identifier for font fallback selection. The value associated with this key is a CFStringRef. If specified in a font descriptor, it is used to select the appropriate font fallback list for the language. This key should not be confused with kCTLanguageAttributeName, which is defined in CTStringAttributes.h.