Seven Hills was an electoral district of the Legislative Assembly in the Australian state of New South Wales.

It is represented by Mark Taylor of the Liberal Party.

The second incarnation of Seven Hills largely consisted of areas from the abolished seat of Toongabbie, which had historically been a Labor stronghold before Labor's near-meltdown in west Sydney in the 2011 election.

The transfer of traditionally pro-Labor voting areas to Blacktown and Prospect, and the addition of equally pro-Liberal areas from Baulkham Hills significantly altered the political composition of the electorate, giving the Liberals a notional margin of 8.8 percent–on the stronger side of fairly safe.

The sitting member for Toongabbie was former Labor Premier Nathan Rees, who concluded the new Seven Hills was impossible to hold and retired at the 2015 election.