Ammerschwihr (; ) is a commune in the Haut-Rhin department in Grand Est in north-eastern France.
Its inhabitants are called Ammerschwihriens.
Ammerschwihr is a small town located on the Wine Road of Alsace. Its main economical resources come from wine-growing, in particular its famous vineyard Kaefferkopf, situated on a hill, and one of the Alsace Grand Cru vineyards.
Ammerschwihr has an oceanic climate (Köppen climate classification Cfb). The average annual temperature in Ammerschwihr is . The average annual rainfall is with December as the wettest month. The temperatures are highest on average in July, at around , and lowest in January, at around . The highest temperature ever recorded in Ammerschwihr was on 7 August 2015; the coldest temperature ever recorded was on 13 January 1987.