The German-born 2014 World Cup winner became a member of the AKP's central council at a congress in Ankara, where Erdogan was re-elected for the ninth time as head of the conservative party which has ruled Turkey since 2002.
Ozil, who ended his club career in Istanbul, is a longtime Erdogan supporter, having chosen him as his best man in 2019 for his wedding to former 'Miss Turkey' Amine Gulse.
A picture of Ozil and Erdogan with former Germany teammate Ilkay Gundogan, also of Turkish origin, caused controversy, with Berlin accusing the Turkish head of state of repressive drift, while Ozil was criticised by the German far right.
Ozil, previously held up as a symbol of a multicultural Germany, turned his back on the German national team, accusing the German FA of racism.