Tachikawa (written: ) is a Japanese surname. Notable people with the surname include:

Akira Tachikawa, Japanese opera singer , Japanese businessman and president of the Japan Aerospace Exploration Agency , Japanese footballer , Japanese historian , Japanese manga artist , Japanese-American educator , Japanese operatic baritone, radio host, and television personality , Japanese baseball player , Japanese director

Fictional characters , a character in the anime series Digimon Adventure