Mahieddine Khalef (Arabic: محيي الدين خالف; 17 January 1944 – 10 December 2024) was an Algerian football player and manager.

Most notably he was the co-manager of the Algeria national team in the 1982 FIFA World Cup, together with Rachid Mekloufi,[1] where Les Fennecs caused a sensation by defeating European reigning champions West Germany in their first World Cup appearance.

[2] Despite this achievement, Algeria went on to be eliminated at the end of the group stage, thanks to a convenient result for both West Germany and Austria in their fixture, in what is known as the Disgrace of Gijón.

[3] Austrian player Reinhold Hintermaier later admitted that that match was fixed.

[4] Khalef died in Algiers on 10 December 2024, at the age of 80.