Kilmer can be:
People
- Kilmer (Marvel Comics), cartoon character
- Billy Kilmer, American football player
- Ethan Kilmer, American football player
- Joanne Whalley-Kilmer, British actress
- John E. Kilmer, U.S. Medal of Honor recipient
- Josh Kilmer-Purcell, writer
- Joyce Kilmer, American poet
- Val Kilmer, American actor
- Willis Sharpe Kilmer American businessman, racehorse owner/breeder
- Douglas Killmer American Bassist whose name is commonly misspelled Kilmer
Other:
- Camp Kilmer, U.S. military facility in New Jersey
- Joyce Kilmer Middle School, Vienna, Virginia