Samia Medjahdi (; 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 has won one ITF doubles title.
Playing for Algeria in Fed Cup, Medjahdi has a W/L record of 8âÂÂ7.
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.