Mr. Fahrenheit may refer to:
- Daniel Gabriel Fahrenheit, Dutch-German-Polish physicist, inventor, and scientific instrument maker
- A song lyric from "Don't Stop Me Now" by Queen "Refers to lead singer, Freddie Mercury"
- Mr. Fahrenheit (pageant), gay beauty pageant in Philippines
- Mr. Fahrenheit, 2016 young adult novel by T. Michael Martin
- Mr. Fahrenheit, British / German Streetart Artist