Masaki Ogata (?? ??, born 1964) is a professional 9 dan Japanese Go player.
He became an insei at the Nihon Ki-in in 1976 under Tsuchida Masamitsu, and turned professional in 1980.
Ogata won the Kido magazine Shinjin (English: "New player") award with 38 wins and 8 losses in 1983, and the Kido award for most wins in 1988 with a record of 39 wins, 1 draw and 13 losses.
He is currently affiliated with the Nagoya branch of the Nihon Ki-in.