Samia Medjahdi (Arabic: سامية مجاهدي; born 6 January 1985) is a retired Algerian tennis player.

Medjahdi has a WTA singles career high ranking of 370 achieved on 7 August 2006.

She also has a WTA doubles career high ranking of 505 achieved on 29 August 2005.

Medjahdi made her Fed Cup debut for Algeria in 2003, while the team was competing in the Europe/Africa Zone Group II, when she was 18 years and 114 days old.

This biographical article relating to Algerian tennis is a stub.