Steadfast may refer to:
- Steadfast, 1991
- Steadfast, 2008
- RSS Steadfast, stealth frigate of the Republic of Singapore Navy
- USCGC Steadfast (WMEC-623), a United States coast guard cutter
- Steadfast, Belize, a village in Stann Creek District, Belize
- List of people known as the Steadfast, a list of people with the epithet of the Steadfast
