Takeshi Oki (大木 武, Ōki Takeshi, born July 16, 1961) is a former Japanese football player and manager. He is the current manager of Roasso Kumamoto.

Oki was born in Shizuoka on July 16, 1961. After graduating from Tokyo University of Agriculture, he played for Fujitsu from 1984 to 1991.

In 1993, Oki became coach for Shimizu S-Pulse. In 2002, he moved to Ventforet Kofu and he became a manager. In 2003, he returned to Shimizu S-Pulse and managed the club. In 2004, he signed with Kawasaki Frontale and he coached the youth team. In 2005, he returned to Ventforet Kofu. At the end of the 2007 season, he resigned and became an assistant coach for the Japan national team under manager Takeshi Okada until the 2010 World Cup. In 2011, he signed with Kyoto Sanga FC and he managed them until 2013. In 2017, he signed with FC Gifu. In June 2019, he resigned when team was at the bottom of the league.^[1] On 12 December 2019, it was announced that Oki was to be appointed as the manager of J3 League club, Roasso Kumamoto from 2020.^[2] Kumamoto finished 8th place in J3 League in 2020, leading J3 League promotion in 2021 The team returned to J2 League after being relegated in 2018. In the 2022 season, the team achieved a record 4th place, which is their highest ever.

Update; end of the 2022 season.^[3]