Ruslan Volodymyrovych Kostyshyn (born 8 January 1977) is a Ukrainian retired professional footballer who played as a midfielder and current football manager of Kazakhstani club Aksu.

Kostyshyn began his career in Podillya-Khmelnytskyi, from which he moved to play for CSKA Kyiv, Arsenal Kyiv, Dnipro and in 2007 he joined Kryvbas Kryvyi Rih.

Kostyshyn played 270 matches in the Ukrainian Premier League and managed to score 26 goals.

Kostyshyn represented Ukraine national team in the Olympics, during which he played 3 games.

This biographical article related to a Ukrainian association football midfielder born in the 1970s is a stub.