<!--
{
  "availability" : [
    "iOS: 8.0.0 -",
    "iPadOS: 8.0.0 -",
    "macCatalyst: 13.0.0 -",
    "macOS: 10.10.0 -",
    "tvOS: 9.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 2.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Swift",
  "identifier" : "/documentation/Swift/Character/isLetter",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "Swift"
    ],
    "preciseIdentifier" : "s:SJ8isLetterSbvp"
  },
  "title" : "isLetter"
}
-->

# isLetter

A Boolean value indicating whether this character is a letter.

```
var isLetter: Bool { get }
```

## Discussion

For example, the following characters are all letters:

- “A” (U+0041 LATIN CAPITAL LETTER A)
- “é” (U+0065 LATIN SMALL LETTER E, U+0301 COMBINING ACUTE ACCENT)
- “ϴ” (U+03F4 GREEK CAPITAL THETA SYMBOL)
- “ڈ” (U+0688 ARABIC LETTER DDAL)
- “日” (U+65E5 CJK UNIFIED IDEOGRAPH-65E5)
- “ᚨ” (U+16A8 RUNIC LETTER ANSUZ A)

---

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)