---
title: startIndex
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/data/startindex
---

# startIndex

The beginning index into the data.

## Declaration

```swift
var startIndex: Data.Index { get }
```

## See Also

### Manipulating Indexes

- [Data.Index](foundation/data/index.md)
- [endIndex](foundation/data/endindex.md)
- [index(after:)](foundation/data/index(after:).md)
- [index(before:)](foundation/data/index(before:).md)