Sir Joseph Amable Thomas Chapais, FRSC (French pronunciation: [ʒozɛf amabl tɔma ʃapɛ]; March 23, 1858 – July 15, 1946)[1] was a French Canadian author, editor, historian, journalist, professor, and politician.

Born in Saint-Denis, Quebec (then Canada East), the son of Jean-Charles Chapais, a Father of Canadian Confederation, and Henriette-Georgina Dionne, he received a bachelor's degree in 1876 from Université Laval and was called to the Bar of Quebec in 1879.

Turning to journalism, he became the editor-in-chief of the daily newspaper, Le Courrier du Canada in 1884 and from 1890 to 1901 was the owner.

In 1891, he ran unsuccessfully as a Conservative for the House of Commons of Canada in the riding of Kamouraska.

In 1935, he was made a Knight Bachelor by George V. Parc Thomas-Chapais in Montreal is named in his honour.