Albert Edward Ahrens was born on April 4, 1867 in Berlin (later Kitchener) Ontario to parents Charles Ahrens and Charlotte Roth. He worked as a shoe manufacturer with his father and brothers at their company Charles A. Ahrens & Sons. Albert is listed as married to Eva I. (birth name unknown, born June 29, 1873 in United States, immigrated to Canada in 1900) in the 1901 census. He later married Isabella Louisa Hachborn September 26, 1910. He had one child with Isabella; Mildred Marie Ahrens. Albert died December 20, 1920 and is buried at Mount Hope Cemetery, Kitchener.

Alan Kenneth Adlington was an economist and university administrator born January 30, 1925. He emigrated to Canada from England in 1930 and served in World War II as part of the Royal Canadian Navy. After the war, he pursued undergraduate studies at from Western University. Adlington served the University of Waterloo from its beginnings in 1957 until 1970. He was the first Business Manager of Waterloo College and Associate Faculties and Secretary to the Board of Governors. He became Vice-President, Administration November 18, 1965 and served in the role until October 12, 1966, when he was named Vice-President, Operations. Adlington's tenure at Waterloo ended June 30, 1970 with a move to the University of Western Ontario to serve as Vice-President, Administration & Finance and later as president (1984-1985) until being named Ontario Deputy Minister of Colleges and Universities. Adlington died in London, Ontario on September 30, 2017.

Darrell Adams (b. September 16, 1983) is the Head Coach for the University of Toronto Varsity Blues. Previously, he was the Associate Head Coach, Defensive Coordinator and Recruiting Coordinator for the University of Waterloo men's football team.

Adams is from Long Island, New York. Between 2001 and 2005 he attended Villanova University, where he obtained a Bachelor of Arts in communications, and played football for the Villanova Wildcats. He studied communications and marketing and graduated in 2005.

In 2006, Adams was signed to a practice roster agreement with the New York Jets and later a reserve/future contract but was released in 2007. He was signed by the Hamilton Tiger-Cats in 2007 to play football and migrated to Canada. He played for the Tiger-Cats until his retirement from professional football in 2010. Adams continued working with the team from 2011 to 2013, as the Strength and Conditioning Coordinator and Assistant Defensive Line Coach. In 2013, he worked as the Strength and Conditioning Coordinator and Defensive Line Coach for the Carleton Ravens (Carleton University).

Adams was hired as the Special Teams, Recruiting and Video Coordinator for the Waterloo Warriors (University of Waterloo) in 2016. He was later promoted to Associate Head Coach, Defensive Coordinator and Recruiting Coordinator. During his time at Waterloo, Adams was a member of the Waterloo Black Faculty Collective, the Black Canadian Coaches Association and Black Football Coaches of Canada. In 2022 he received the Ontario University Athletics' Equity Diversity and Inclusion Award in recognition of his work to advance positive systemic change on- and off-campus. The same year, he was one of nine participants in the Canadian Football League's four-week Diversity in Football Program.

In January 2024 it was announced that Adams was leaving Waterloo to accept a new role as the Head Coach for the University of Toronto Varsity Blues.

Milton Acorn was a Canadian poet born on March 30, 1923 in Charlottetown, Prince Edward Island. He mainly worked as a carpenter by trade, but also wrote poetry influenced by Marxist ideas as well as experiences from the working-class. Acorn published various collections of his writing and gained recognition from fellow poets for his nationalism and activism. Throughout his life, Acorn lived in various cities across Canada including Montreal, Toronto, and Vancouver before moving back to Charlottetown, where he died on August 20, 1986.

Rudolph Ackermann (20 April 1764 in Schneeberg, Electorate of Saxony – 30 March 1834 in Finchley, London) was an Anglo-German bookseller, inventor, lithographer, publisher and businessman.

The Acadian Club in Waterloo, Ontario was a social club for single and married men of German background. On May 5, 1916, the club rooms were raided by members of the 118th Batallion for the purpose of removing a bust of the Kaiser and in the course of the raid the club sustained damage to property and premises. The Club submitted a claim for damages to the government which, like the claim made by the Concordia Club of Kitchener for damages sustained during a previous raid by the 118th Batallion on Feb. 16 of the same year, was rejected. (Ontario and the First World War: a collection of documents / edited with an introduction by Barbara M. Wilson. -- Toronto: Champlain Society, 1977.)

Dr. Douglas Abel is an actor, director, playwright, and theatre columnist. He has also been a voice, speech, dialect, phonetics, and acting teacher.

Abel worked as an assistant professor in the Drama Department at the University of Waterloo between 1981 and 1990.