Motoki (written: 元気, 昌樹, 誠記, 基輝, or モトキ in katakana) is a masculine Japanese given name. Notable people with the name include:

, Japanese footballer , Japanese judoka , Japanese actor , Japanese voice actor and singer , Japanese academic and linguist

Motoki (written: 本木, 元木 or 端木) is also a Japanese surname. Notable people with the surname include:

, Japanese film director and producer , Japanese actor , Chinese businessman , Japanese actor , Japanese sport wrestler , Japanese rugby union player