Lac-à-la-Tortue is a small community of 2,500 inhabitants in Quebec. Formerly a separate municipality, it has been one of the seven sectors of the city of Shawinigan since the municipal amalgamation of January 1, 2002. The name Lac-a-la-Tortue is French for Turtle Lake.
From 1895 to 2001, Lac-à-la-Tortue had its own mayor and its own city council. [1] The mayors were:
| # | Mayor | Taking Office | Leaving |
| 1 | Onésime L’Heureux | 1895 | 1901 |
| 2 | Samuel Buisson | 1901 | 1907 |
| 3 | Phydime Simard | 1907 | 1910 |
| 4 | J.-E. Collin | 1910 | 1916 |
| 5 | Isidore Bernier | 1916 | 1917 |
| 6 | Philippe Parenteau | 1917 | 1919 |
| 7 | Sinaï Lupien | 1919 | 1923 |
| 8 | L.-P. Marchand | 1923 | 1929 |
| 7 | Sinaï Lupien | 1929 | 1933 |
| 9 | Pierre Matton | 1933 | 1937 |
| 7 | Sinaï Lupien | 1937 | 1939 |
| 10 | Émile Beaudoin | 1939 | 1945 |
| 7 | Sinaï Lupien | 1945 | 1949 |
| 11 | Henri-J. Dubois | 1949 | 1953 |
| 12 | Julien Massicotte | 1953 | 1969 |
| 13 | Achille Lajoie | 1969 | 1975 |
| 14 | Réjean Petit | 1975 | 1979 |
| 15 | Martial Grenier | 1979 | 1983 |
| 16 | Jacques Longpré | 1983 | 1985 |
| 17 | Gaston Demers | 1985 | 1987 |
| 16 | Jacques Longpré | 1987 | 1991 |
| 18 | Bernard Cayouette | 1991 | 2001 |