Erhun Aksel Oztumer (born 29 May 1991) is an English professional footballer who plays as a midfielder for Mağusa Türk Gücü.

Despite featuring mainly for the Manisaspor youth team, in 2009 he earned a move to Sivasspor, also of the Turkish Süper Lig, where he signed his first professional contract.

He went on to score over 60 goals from midfield in all competitions over two seasons, during which time Dulwich won promotion to the Isthmian League Premier Division.

In June 2014, he moved back into the professional game, joining Peterborough United for an undisclosed fee,[5] leaving with the best wishes of Dulwich Hamlet manager Gavin Rose.

[6] He played one friendly in pre-season, scoring a free kick against St Neots Town, before suffering an injury which kept him out of the early part of the 2014–15 season.

[24][25] In July 2023, Oztumer signed for Mağusa Türk Gücü, reigning champions of the top division of Northern Cyprus.