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.

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