Fiammetta \fi(am)-metta, fiamm(et)-ta\ as a girl's name is of Italian origin, and the meaning of Fiammetta is "little fiery one". The word "fiamma" means "flame": it may refer to the flames of the Holy Spirit that descended on the apostles on the day Christians commemorate as Pentecost.

Fiammetta has 1 variant form: Fiamma.