Mulder could refer to:
- The Mulder family, including:
- Fox Mulder, a former Special Agent in the FBI.
- William Mulder, a former State Department and Syndicate operative and the father of Fox.
- Samantha Mulder, a missing UFO abductee and sister to Fox.
- Teena Mulder, the wife of William and mother to Fox.
- This is a disambiguation page, a list of pages that might otherwise have the same name. If you followed a link here, you might want to go back and fix that link to point to the intended page.