Thomas, Tommy or Tom Sim(m)s may refer to:
- Tommy Simms (Automatic Loveletter), musician
- Tom Simms, character in Deranged (1974 film)
- Tommy Sims, bassist in White Heart
- Tommy Sims (American football), American football defensive back
- Tom Sims, snowboarder and skateboarder
- Thomas Sims, escaped slave
See also
- Thomas Robertson Sim, botanist, bryologist, botanical artist and Conservator of Forests