Hiro is a Japanese name and a short form of names such as Hiroshi and Hiroki; depending on the kanji it means "generous", "abundant" or "broad". American audiences met it through Hiro Hamada, the young hero of the Disney film Big Hero 6 in 2014, and the name's best year followed right after. Hiro had fewer than five births in 2000, peaked at number 1907 in 2016 and ranks number 2902 in 2025 with 43 births.