The Firefly was a sailing event on the Sailing at the 1948 Summer Olympics program in Torbay.

Seven races were scheduled.

21 sailors, on 21 boats, from 21 nations competed.

[1] DNF = Did Not Finish, DNS= Did Not Start, DSQ = Disqualified = Male, = Female A total of three race area's was positioned by the Royal Navy in Torbay.

Each of the classes was using the same kind of course and the same scoring system.