Kwinana is an electoral district of the Legislative Assembly in the Australian state of Western Australia.

However, Labor candidate Roger Cook won the seat only narrowly against independent challenger Carol Adams, prevailing 50.79% to 49.21%.

[2] Adams, the mayor of Kwinana, launched her independent candidacy after unsuccessfully contesting Labor preselection for the seat.

[3] Adams sought a rematch in 2013, but Cook won with a slightly increased majority.

The district takes in the suburbs of Henderson, Wattleup, Hammond Park, Aubin Grove, Banjup, Naval Base, Hope Valley, Mandogalup, Wandi, Kwinana Beach, Postans, The Spectacles, Anketell, Medina, Orelia, Calista, Kwinana Town Centre, Parmelia, Bertram, Casuarina, Leda, as well as parts of Wellard and East Rockingham.