Brendan Michael Smyth is an Australian former politician, who was a member of the Australian Capital Territory Legislative Assembly representing the electorate of Brindabella for the Liberal Party from 1998 until 2016. From 2002 to 2006 Smyth was the ACT Leader of the Opposition and served briefly as the Deputy Chief Minister during 2000 and 2001. He has held the ACT portfolios Urban Services, Business, Tourism and the Arts, and Police and Emergency Services.

Elections to the Australian Capital Territory Legislative Assembly were held on Saturday, 21 February 1998. The incumbent Liberal Party, led by Kate Carnell, was challenged by the Labor Party, led by Wayne Berry. Candidates were elected to fill three multi-member electorates using a single transferable vote method, known as the Hare-Clark system. The result was another hung parliament. However the Liberals, with the largest representation in the 17-member unicameral Assembly, formed Government with the support of independents Michael Moore, Paul Osborne, and Dave Rugendyke. Carnell was elected Chief Minister at the first sitting of the fourth Assembly on 19 March 1998.