Mikkel Rufus Mutahi Bischoff (born 3 February 1982) is a retired Danish footballer of Kenyan descent. He played as a centre back. At 6'4"/1.93 m he adds height to any defence and can play at full back or even as a striker. He has played four games for the Denmark under-21 national team.
Born in Copenhagen, Bischoff made his senior debut with Danish club Akademisk Boldklub, where he played just eleven Danish league games. On 15 May 2002, he moved abroad to join English club Manchester City for a fee of £750,000. He was the fourth Dane to sign for Manchester City in less than a year, with Peter Schmeichel, Niclas Jensen and Kevin Stuhr Ellegaard at City already. Bischoff's capture was part of a move to strengthen the team's prospects for the future, and Bischoff made his debut for the Danish under-21 national team upon his arrival at City. After making his one and only league appearance for City against Blackburn Rovers in September 2002, he underwent a hernia operation, and was unable to make an impression for the club. He was under the knife again in the summer of 2003 after picking up a foot injury playing for the Denmark under-21 side.