Angus McGill Mowat, B.A., M.A., (November 19, 1892 – September 21, 1977) was a Canadian librarian who initiated and contributed to the continuing improvement of the library systems in Saskatoon and Ontario, from the 1920s through to the 1960s.

[2] Throughout his career he encouraged better quality collections for adults and children,[3] professional staffing and library training, the necessity for improved finances, more efficient management by trustees and librarians, and upgraded or new buildings.

Post World War I, Angus finally graduated with a Bachelor of Arts degree in 1931 (after taking part-time courses from 1926 to 1931).

He served in France and Belgium, and was wounded badly in his right arm at the Battle of Vimy Ridge, returning to Canada late in 1917.

From 1968 to 1971 he painstakingly restored the wreck of a boat he had seen under construction in Trenton as a boy in 1908, originally called the Scott Hutcheson.

The boat is now in the Marine Museum of the Great Lakes at Kingston's collection and is called The Black Angus in homage.

[5] Late in his life became a good friend of the poet, Al Purdy,[16] and was the subject of the National Film Board short documentary Angus in 1971.