# Component Names

A component name must follow the naming rules for Lightning components.

A component name must follow these naming rules:

- Must begin with a letter
- Must contain only alphanumeric or underscore characters
- Must be unique in the namespace
- Can’t include whitespace
- Can’t end with an underscore
- Can’t contain two consecutive underscores

**See Also**

- [Create Aura Components in the Developer Console](/docs/platform/aura-platform/guide/components-create-devconsole.md)
- [Component Markup](/docs/platform/aura-platform/guide/components-markup.md)