Alfred Herman Duerr (born January 29, 1951) is a former Canadian politician who served as the 34th mayor of Calgary, Alberta from 1989 to 2001, and a city alderman from 1983 to 1989.

[7] Duerr would go on to be re-elected as mayor three more times in 1992, 1995, and 1998 before deciding not to contest the 2001 election, which was won by former Alderman Dave Bronconnier.

[10] In 1991, Duerr would proclaim gay pride week in Calgary; however, he would deny future proclamations due to public pressure.

[14] He is the Chief Executive Officer of Emergo Projects International, and serves on the board of directors for two other companies in Calgary.

[12] He is a member of the Community and Partners Advisory Committee of the Libin Cardiovascular Institute of Alberta.