Hirokazu is a masculine Japanese given name.

Written forms Hirokazu can be written using different kanji characters and can mean: , "vast, harmony" , "command, one" , "wide, harmony" , "abundant, harmony" , "wide, one" , "vast, many" , "ocean, one" , "command, harmony" , "tolerant, harmony" , "broad, harmony" The name can also be written in hiragana () or katakana ().

People with the name , Japanese former football player , Japanese footballer , Japanese character designer and animation director for Sunrise , Japanese professional baseball player in Japan's Nippon Professional Baseball , world-renowned Japanese master of Shotokan karate , Japanese aikido teacher, student of the founder of aikido Morihei Ueshiba , Japanese film director, producer, screenwriter and editor , Japanese politician of the Liberal Democratic Party , Japanese bureaucrat, a business leader, and a politician , Japanese football player and manager , Japanese former football player , Japanese football player , Japanese former football player , Japanese politician of the Democratic Party of Japan , Japanese composer and musician who has written music for video games produced by Nintendo , Japanese shogi player , Paralympian athlete from Japan competing mainly in category T52 long distance events , Japanese football player , Japanese former ski jumper who competed between 1979 and 1984 , Japanese video game designer and Sonic Team's 2nd Assistant President , American psychologist