Graham Michael Quirk is a former Australian politician who served as the 16th Lord Mayor of Brisbane. From 2008 until 2011, he was Deputy Lord Mayor under Campbell Newman, succeeding the latter when Newman stepped down to prepare to contest the 2012 Queensland State Election, at which he was elected as the Premier of Queensland. Quirk served as a Councillor in the City of Brisbane since 1985. Quirk is a member of the Liberal National Party of Queensland, affiliated federally with the Liberal Party of Australia.

The Lord Mayor of Brisbane is the chief executive of the City of Brisbane, the capital of the Australian state of Queensland, and the head of the Brisbane City Council. Lord Mayor Adrian Schrinner of the Liberal National Party was sworn in on 8 April 2019, following the resignation of Graham Quirk.