Kento Sugiyama (杉山 賢人, Sugiyama Kento, born December 12, 1968) is a retired Japanese professional baseball player from Numazu, Shizuoka, Japan. He played for the Seibu Lions, Hanshin Tigers, Osaka Kintetsu Buffaloes, and Yokohama BayStars during his 10-year career in the Japanese professional leagues.

Kento Sugiyama
Sugiyama with the Tohoku Rakuten Golden Eagles
Pitcher / Coach
Born: (1968-12-12) December 12, 1968 (age 55)
Batted: Left Threw: Left
NPB debut
April 15, 1993, for the Seibu Lions
Last appearance
September 13, 2001, for the Yokohama BayStars
NPB statistics
Win–loss–tie	17–13–17
ERA	3.91
Strikeouts	295
Teams
As player Seibu Lions (1993–1999) Hanshin Tigers (1999–2000) Osaka Kintetsu Buffaloes (2000–2001) Yokohama BayStars (2001) As coach Tohoku Rakuten Golden Eagles (2006–2009, 2015–2016) Lamigo Monkeys (2017) Saitama Seibu Lions (2018–2021)
Medals Representing  Japan Men's Baseball Summer Olympics Barcelona 1992 Team

Sugiyama was drafted in the first round of the 1992 amateur draft by the Seibu Lions, and won the Japanese rookie of the year award in 1993, making 54 appearances with a 2.80 ERA. His pitching deteriorated from then on, and he was traded to the Hanshin Tigers in mid-1999. He was traded to the Osaka Kintetsu Buffaloes in mid-2000, and was traded for the third time in his career in mid-2001 to the Yokohama BayStars. He made 32 appearances with the BayStars in 2001, but retired at the end of the season.

He worked as a batting pitcher for the BayStars before becoming the pitching coach for the Tohoku Rakuten Golden Eagles in 2006.

He won a bronze medal in the 1992 Summer Olympics before entering the Japanese professional leagues.