Léa Cousineau was a Canadian politician and a City Councillor in Montreal, Quebec.
[1] In the early seventies she became a founding member and the President of the progressive Montreal Citizens' Movement, also known as Rassemblement des citoyens et citoyennes de Montréal (RCM) in French.
She ran as an RCM candidate to Montreal's City Council in the district of Rosemont in 1974, but lost against Civic incumbent Jean Trottier.
Cousineau ran again in 1986 in the district of Étienne-Desmarteau and won.
From 1986 to 1990, she was the Chairperson of Montreal's Executive Committee.