| Petit-Mécatina | |
| Pushpin Map: | Côte-Nord Region Quebec |
| Pushpin Map Caption: | Location in Côte-Nord Region of Quebec |
| Coordinates: | 51.5°N -60°W |
| Subdivision Type: | Country |
| Established Title1: | Constituted |
| Established Date1: | July 1, 1855 |
| Area Total Km2: | 39993.19 |
| Area Land Km2: | 35347.19 |
| Population Total: | 0 |
| Population As Of: | 2021 |
| Population Density Km2: | 0.0 |
| Population Blank1: | N/A |
| Population Blank2 Title: | Dwellings |
| Population Blank2: | 0 |
| Utc Offset1: | -4 |
| Blank Name: | Highways |
| Blank Info: | No major routes |
Petit-Mécatina is an unorganized territory in the Côte-Nord region of Quebec, Canada, part of Le Golfe-du-Saint-Laurent Regional County Municipality. It was formerly part of the Minganie Regional County Municipality, but transferred to the current MRC in July 2010.
It is named after the Petit Mécatina River that bisects the territory from north to south and empties in the Gulf of Saint Lawrence just west of Petit Mécatina Island. The 545km (339miles) river forms east of Lake Aticonac just south of the boundary between the Atlantic and Saint Lawrence watersheds, that is also the disputed boundary between Quebec and Labrador. Mécatina comes from the Innu word makatinau and means "large mountain".[1]
As part of the Labrador boundary dispute, the official borders of Petit-Mécatina as claimed by Quebec include part of the territory of Labrador.
The region has been completely uninhabited since at least 1991.