The Fireflies were an American doo wop group, from Long Island, New York.

The group formed in Long Island, New York in 1957, and underwent several line-up changes over the course of their existence; its most prominent member was Ritchie Adams. The group was produced by Gerry Granahan. Their debut for Roulette Records was the single "The Crawl", but the group's second single, the Ribbon Records release "You Were Mine", was their biggest hit. It peaked at #21 on the Billboard Hot 100 in 1959. Following the single's success, The Paulette Sisters released an answer record called "I Was Yours", and Wayne Thomas covered "You Were Mine".