Division of Bullwinkel

The Division of Bullwinkel is an Australian electoral division in the state of Western Australia contested for the first time at the 2025 federal election. It was created in 2024 as part of a successful redistribution, a statutory process to maintain broad population equality amongst lower house seats over time and as populations shift, and thus maintain broadly one vote one value. The process was managed, and ultimately new boundaries for WA divisions were determined, by Australia's independent statutory elections authority, the Australian Electoral Commission. The current representative as of the 2025 Australian federal election is Trish Cook of the Australian Labor Party.

The seat at its creation was a 'marginal seat', being notionally held by the Labor Party by only 3.3%.

A hybrid urban-rural seat, Bullwinkel takes in certain outer eastern suburbs of Perth, then sweeps out to the northeast and southeast, to cover rural areas to the east of the state capital's metropolitan area. It incorporates areas that were formerly parts of the divisions of Hasluck, Durack, Swan, O'Connor and Canning, prior to the redrawing of their boundaries. Those boundary changes, and new boundaries for the new seat, took effect from the first election of the whole House of Representatives held after the 2024 effective date of the redistribution: namely, the 2025 Australian election.