Tadakatsu (written 忠勝 or 忠毅) is a Japanese masculine given name. Notable people with the name include:
*, Japanese samurai and ''daimyō''
*, Japanese ''daimyō''
*, Japanese samurai
*, Japanese ''daimyō''
*, Japanese official and ''daimyō''
*, Japanese samurai and politician
{{given name
Japanese masculine given names
Masculine given names