# Queue<T>

A first-in, first-out collection for values waiting to be processed.

## What is **Queue<T>** in C#?

**Queue<T>** — A first-in, first-out collection for values waiting to be processed.

```csharp
class GuestLine
{
    Queue<string> guests = new();
}
```

Level: Freelancer · [More C# terms at this level](https://www.ask-codey.com/glossary/subjects/c-sharp/freelancer)

Updated: September 27, 2026

Source: https://www.ask-codey.com/glossary/queue-t