Montaro \m(o)-nta-ro, mon-taro\ as a boy's name is pronounced mon-tah-roh. It is of Japanese origin, and the meaning of Montaro is "big boy".
Baby names that sound like Montaro are Mentor and Montrel. Other similar baby names are Kentaro, Monro, Montagu, Montane, Montana, Montay and Montae.