Olubayo Adefemi (13 August 1985 – 18 April 2011) was a Nigerian professional footballer who last played for Skoda Xanthi.

He also played for the Nigeria National Football Team[2] Adefemi represented his country at the 2008 Olympic Games, playing all the games and scoring a goal in a semifinal match against Belgium.

He was a member of the Nigerian Under 20 team that came second behind a Lionel Messi-led Argentina at the 2005 FIFA World Youth Championship in the Netherlands.

Adefemi played 5 out of Nigeria's six matches, scoring 1 goal against Morocco in the semi-final.

[4] On 18 April 2011 Olubayo died in a car crash while driving on the A2 motorway (Egnatia Odos), near the city of Kavala, Greece.