Holsworthy is an electoral district of the Legislative Assembly and is represented by Tina Ayyad of the Liberal Party since the 2023 New South Wales state election.
Holsworthy was created in the 2013 redistribution, largely replacing Menai.
On its current boundaries, Holsworthy takes in the suburbs of Bangor, Barden Ridge, Casula, Chipping Norton, Cross Roads, Hammondville, Holsworthy, Liverpool, Liverpool Military Area, Lucas Heights, Lurnea, Moorebank, Pleasure Point, Prestons, Sandy Point, Voyager Point and Wattle Grove.