Alireza Karimi Machiani (Persian: علیرضا کریمی ماچیانی; born 21 March 1994) is an Iranian freestyle wrestler.

In February 2018 the United World Wrestling banned Karimi for six months for deliberately throwing a match to avoid having to face an Israeli opponent, Uri Kalashnikov who went on to win the bronze medal.

[6] He thereby violated International Wrestling Rules and the UWW Disciplinary Regulations, by intentionally losing to a Russian competitor in the quarterfinal of the U-23 World Championship in Bydgoszcz, Poland, in the 86-kilogram category, in November 2017.

[7] Karimi was then supposed to face the Israeli, Kalashnikov, in the repechage (to compete for the bronze medal), but he forfeited that match.

"[7][9] Karimi told the Iranian Students News Agency that he purposefully lost to avoid the risk of competing against the Israeli.