The Mastercard Japan Championship is a professional golf tournament in Japan on the PGA Tour Champions, played at Narita Golf Club in Narita, Chiba, Japan. The inaugural edition in September 2017 featured an 81-player field competing for a $2.5 million purse, and was a no-cut, 54-hole event.
Colin Montgomerie won the inaugural event by one stroke over Billy Mayfair and Scott McCarron.