Tadayuki (written: , , , , or ) is a masculine Japanese given name. Notable people with the name include:
, Japanese baseball player , Japanese daimyō of the late Edo period , Japanese daimyō of the Edo period , Japanese daimyō who ruled the Yokosuka Domain, and lived from the mid to late Edo period , Japanese daimyō of the mid to late Edo period, who ruled the Obama Domain , Japanese photographer , Japanese boxer , Japanese photographer Tadayuki Okada (born 1967), Japanese motorcycle racer , Japanese figure skater and coach