Jean-Martin Aussant (French: [ʒɑ̃ maʁtɛ̃ ɔsɑ̃]) is a Canadian economist, musician, and politician, now serving as Executive director of the Chantier de l'économie sociale.

[4] Returning to Quebec in 2005, he was a manager for Canada's Public Sector Pension Investment Board for two years before starting a private consulting practice.

[6] The Liberals won a majority government across the province under Jean Charest's leadership, and the Parti Québécois formed the official opposition.

Aussant was appointed as his party's critic for financial institutions and international commerce and became an opposition representative on the legislative committee on public finances.

(The TMX Group took over the Montreal Stock Exchange in 2008, through a deal which gave Quebec's Autorité des marchés financiers a say over future changes in the company.

Before leaving the party, he founded a video touring series with three other PQ MNAs to promote the benefits of an independent Quebec, called the ABCD (for Aussant, Blanchet, Cloutier, Drainville).

[14] On June 7, 2011, Aussant followed caucus-mates Louise Beaudoin, Pierre Curzi, and Lisette Lapointe in resigning from the Parti Québécois caucus.

Aussant came closest to winning; he lost his seat to a Coalition Avenir Québec candidate, but pushed the PQ into fourth place.