Alsace (D656) is an Aquitaine-class frigate of the French Navy developed through the FREMM multipurpose frigate program. She is the first of two air-defence variants of the class known as FREMM DA in the program.

The FREMM, which stands for "European multi-purpose frigate", is a Franco-Italian family of multi-purpose frigates designed by Naval Group and Fincantieri. In France, this surface combatant is known as the "Aquitaine class", while in Italy it is known as the "Bergamini class". The lead ship of the class, Aquitaine, was commissioned in November 2012 by the French Navy. Italy has ordered six general purpose and four anti-submarine variants. France, on the other hand, has ordered six anti-submarine variants and two air-defense ones.