---
title: entityA
framework: realitykit
role: symbol
role_heading: Instance Property
path: realitykit/collisionevents/updated/entitya
---

# entityA

The first entity involved in the collision.

## Declaration

```swift
let entityA: Entity
```

## See Also

### Getting the involved entities

- [entityB](realitykit/collisionevents/updated/entityb.md)