Alannah Joan Geraldine Cecilia MacTiernan (born 10 January 1953) is an Australian politician. Since 1988, she has served in politics at a federal, state, and local level, including as a minister in the Western Australian state governments of Geoff Gallop, Alan Carpenter, and Mark McGowan. She is best known for her role as the minister for planning and infrastructure during the construction of the Mandurah line. Born in Melbourne, she moved to Perth to study at the University of Western Australia, graduating with a Bachelor of Arts and later with a law degree. She worked for the Department of Employment before practising as a lawyer between 1986 and 1992. During this time, she served on the Perth City Council as well. In 1976, she joined the Australian Labor Party, and at the 1993 Western A