Lac-Blanc
Unorganized territory
Location within Portneuf RCM
Lac-Blanc Location in central Quebec
Coordinates: 47°17′N 72°01′W / 47.283°N 72.017°W / 47.283; -72.017[1]
Country	Canada
Province	Quebec
Region	Capitale-Nationale
RCM	Portneuf
Constituted	January 1, 1986
Government [2]
• Fed. riding	Portneuf—Jacques-Cartier
• Prov. riding	Portneuf
Area [2][3]
• Total	570.36 km2 (220.22 sq mi)
• Land	549.55 km2 (212.18 sq mi)
Population  (2021)[3]
• Total	0
• Density	0/km2 (0/sq mi)
• Pop (2016–21)
• Dwellings	6
Time zone	UTC−5 (EST)
• Summer (DST)	UTC−4 (EDT)
Highways	No major routes

Lac-Blanc (French pronunciation: [lak blɑ̃]) is an unorganized territory in the Capitale-Nationale region of Quebec, Canada, in the north-east of the Portneuf Regional County Municipality. This unorganized territory covers about 570 square kilometres (220 sq mi). The main namesake lake is oriented north–south.^[4] The discharge of this lake is at its southern point, where it flows into the Blanche River.

Almost its entire territory is part of Zec de la Rivière-Blanche and Zec Batiscan-Neilson.

Private dwellings occupied by usual residents in 2021: 0 (total dwellings: 6)^[3]

• Rivière-à-Pierre, municipality
• Batiscanie
• Batiscan River
• Portneuf Wildlife Reserve
• Laurentides Wildlife Reserve