Oussama Haddadi (Arabic: أُسَامَة الْحَدَّادِيّ; born 28 January 1992) is a Tunisian professional footballer who plays as a left-back for Dibba Al-Hisn and the Tunisia national team.

On 30 January 2017, Haddadi joined Ligue 1 side Dijon, signing a 2+1⁄2-year contract with the club.

[2] On 29 May 2019, Al-Ettifaq announced the signing of Haddadi from Dijon for the 2019–20 season having agreed a four-year contract.

[3] On 21 January 2020, Al-Ettifaq announced that it loaned Haddadi for a year and a half to Kasımpaşa.

[4] On 14 June 2022, Haddadi signed a two-year contract with Greuther Fürth in Germany.