Otto \o(t)-to\ as a boy's name is pronounced AW-toh. It is of Old German origin, and the meaning of Otto is "wealth". Common in English-speaking countries until Otto von Bismarck's German armies became threateningly powerful in the early 20th century. Ottone is the Italian form.

Otto has 10 variant forms: Odis, Odo, Ot, Ota, Otha, Othello, Otho, Ottis, Ottone and Otys.

For more information, see also the related name Autha.

Baby names that sound like Otto are Adao, Ado, Witt, Ido, Iddo, Itai, Ittai, Jeth, Jet, Jette, Jett, Odie, Udo, Wat and Watt.