Kosuke Ota (太田 宏介, Ōta Kōsuke, born July 23, 1987) is a Japanese former football player who play as Defender.

[2] Ota began his footballing career with Yokohama FC in 2006, before a move to J1 League side Shimizu S-Pulse in 2009.

[3] He remained in Tokyo for three years before leaving Japanese football for the first time as he completed a transfer to Eredivisie team Vitesse.

[3] He participated in 28 matches in all competitions during 2015–16 and 2016–17 prior to returning to FC Tokyo and Japan after struggling to adapt to life in the Netherlands.

[6] On 3 October 2023, Ota announcement officially retirement from footballer at the end of this season after getting minimal playing in Machida Zelvia.