Thérèse Tanguay-Dion, (née Tanguay; March 20, 1927 – January 17, 2020), popularly known as Maman Dion ("Mommy Dion" in French), was a Canadian television personality and the mother of singer Celine Dion.

She was born on the Gaspé Peninsula, in Saint-Bernard-des-Lacs, Quebec, as was her husband, Adhémar-Charles Dion. Her parents were Antoinette (née Sergerie) and Laureat Achille Tanguay.

Already well known in Quebec as a stage mother involved in her daughter's career, she later launched her own line of food products, Pâtés de Maman Dion, and became host of a cooking show for TVA. She was also a sponsor of the Fondation Maman Dion which was founded in 2006, an educational foundation which provides school supplies, clothing and eyewear to underprivileged children.