Harki (adjective from the Arabic harka, standard Arabic haraka حركة, "war party" or "movement", i.e., a group of volunteers, especially soldiers) is the generic term for native Muslim Algerian who served as auxiliaries in the French Army during the Algerian War of Independence from 1954 to 1962. The word sometimes applies to all Algerian Muslims (thus including civilians) who supported French Algeria during the war. The motives for enlisting were mixed. They are regarded as traitors in independent Algeria and thousands were killed after the war in reprisals despite the Évian Accords ceasefire and amnesty stipulations.

In France the term can apply to Franco-musulmans rapatriés (repatriated French Muslims) living in the country since 1962 - and to their metropolitan-born descendants. In this sense, the term Harki refers to a social group - a fraction of the French Muslims from Algeria - as distinct from other French of Algerian origin, or from Algerians living in France.

Paris wanted to avoid their massive resettlement in France. Early arrivals were interned in remote detainee camps and were victimized by endemic racism. By 2012, however, 800,000 Harkis, Pied-Noirs and their descendants over the age of 18 lived in France. French President Jacques Chirac established 25 September 2001 as the Day of National Recognition for the Harkis. On 14 April 2012, President Nicolas Sarkozy recognized France's "historical responsibility" in abandoning Harki French Muslim veterans at the time of the war.