Tommi \t(om)-mi\ as a girl's name is a variant of Thomasina (Aramaic), and the meaning of Tommi is "twin".
The baby name Tommi sounds like Tammi, Tommy, Tommie and Timmi. Other similar baby names are Toni, Toini, Cammi, Emmi, Kammi, Koemi, Noemi, Noami, Romma, Romi, Sammi, Tammy, Tamma, Tami, Tammie, Tommye, Toma, Timmie, Tobi, Tori and Torri.