(the ancient Vapincum), a town of France, capital of the department of Hautes Alpes, and of a cognominal arrondissement, on the right bank of the Luie, 46 miles S.E. of Grenoble. It stands in a wide valley 2390 feet above the sea, and surrounded by an amphitheatre of hills, over which tower the snow-covered mountains of the Alps. In the vicinity are fine walnut avenues and vineyards, but the town itself is an ill-built miserable-looking place. The chief public buildings are the Gothic cathedral, containing the tomb of the celebrated Constable de Lesdiguières, the court house, town hall, bishop's palace, barracks, and theatre. It is the seat of a court of primary jurisdiction, and has a communal college, diocesan seminary, public library, and a museum of natural history. The manufactures comprise woollen, linen, and silk goods, leather and dressed skins. In the vicinity are some marble quarries, which were known to the Romans. It became the seat of a bishopric in the fourth century, and its bishops were for a long period styled princes and counts of Gap. Gap in former times suffered greatly from the devastations of the Lombards and Saracens, from earthquakes, the plague, &c., but more especially from the revocation of the edict of Nantes. Pop. of town (1851) 7726.