See also the related category finnish.
Terttu is not commonly used as a baby girl name. It is not listed within the top 1000.
Baby names that sound like Terttu include Tarati, Tharwat, Tiarett, Tiarette, Tiarret, Trude (German and English), Trudee, Trudey (English), Trudi (German and English), Trudie (Dutch and English), Trudy (English, Dutch, and German), Trudye, Tirtha, Zarita (Spanish and Indian), Toreth, Traute (German), and Truth.
† English pronunciation for Terttu: T as in "tee (T.IY)" ; EH as in "ebb (EH.B)" ; R as in "race (R.EY.S)" ; UW as in "two (T.UW)"