If it's too long people might use In English: Tonya In English: Tonia In English: Toni
For the opposite sex use: In Ancient Roman: Antonius (M)
See also In Spanish and in Italian: Antonietta (F) In Slovene: Tonka (F) In English, Italian, Spanish, Portuguese, German, Scandinavian, Dutch and in Ancient Roman: Antonia (F)
Extra information: Alternative meanings (Polish) Flower