Morosaglia (Italian pronunciation: [moˈrozaʎʎa]; French: [mɔʁoza(l)ja]; Corsican: Merusaglia, [mɛˈruzaʎʎa]) is a commune in the Haute-Corse department, on the island of Corsica, France.

Paoli had his chambers in the Franciscan monastery and the Corsican parliament met there.

The commune extends to the east to the largest mountain of Castagniccia, mounting to 1,230 metres (4,040 ft) to the peak of San Paolu, and stretches to the west for 13 kilometres (8 mi) beyond the river Golo.

In the plain of the river, nearly at its confluence with the Asco, on the Bastia-Ajaccio road, is the hamlet of Ponte-Leccia, where the only railway branch of the entire island is located, the branch to Calvi.

The statisticians have given the name of Ponte-Leccia to a microregion of 3,800 people and 563 square kilometres (217 sq mi), which approximates the ancient parish of Caccia and the canton.