Jean-Thomas Taschereau (French pronunciation: [ʒɑ̃ tɔma taʃʁo]; December 12, 1814 – November 9, 1893) was a Canadian lawyer and judge.

His father was a judge of the Court of King's Bench of Quebec, and his mother was the daughter of Jean-Antoine Panet, the first Speaker of the Legislative Assembly of Lower Canada.

His younger brother Elzéar-Alexandre Taschereau was the first Canadian Cardinal of the Roman Catholic Church and served as Archbishop of Quebec from 1871 until his death in 1898.

His great-uncle Bernard-Claude Panet also served as Archbishop of Quebec (1825–1833).

He studied law in Paris and upon his return to Quebec City where he practised for 18 years.