Gap (French pronunciation: [ɡap], Occitan: [ˈɡap]) is the prefecture of the department of Hautes-Alpes, in the region of Provence-Alpes-Côte d'Azur, southern France. In 2019, the commune had a population of 40,631, making it the most populated city in Hautes-Alpes. At a height of 750 metres above sea level, to the south of the Écrins Massif, it is also France's highest prefecture.
Together with other Alpine towns, Gap engages in the Alpine Town of the Year Association for the implementation of the Alpine Convention to achieve sustainable development in the Alpine Arc. Gap was awarded Alpine Town of the Year in 2002. In 2013 Gap was named the sportiest city in France by the national sports newspaper L'Équipe.