Tamotsu (written: 保) is a masculine Japanese given name. Notable people with the name include:
Tamotsu Asakura, Japanese footballer (born 1929), Japanese cyclist (born 1970), Japanese footballer (1900–1946), Imperial Japanese Navy admiral (1947–2025), Japanese football player and manager (died 1973), Japanese photographer
See also 9096 Tamotsu, main-belt asteroid