Newtown is an electoral district of the Legislative Assembly in the Australian state of New South Wales.

On its current boundaries, Newtown includes the suburbs of Redfern, Chippendale, Darlington, Eveleigh, Newtown, Enmore, Stanmore and Petersham and parts of Waterloo, Erskineville, Camperdown, Marrickville and Lewisham.

With the abolition of multi-member constituencies in 1894, it was replaced by Newtown-Camperdown, Newtown-Erskine, Newtown-St Peters and Marrickville.

Newtown was re-created in 1904 as a result of the 1903 New South Wales referendum, which required the number of members of the Legislative Assembly to be reduced from 125 to 90 which saw the districts of Newtown-Camperdown, Newtown-Erskine and Newtown-St Peters abolished and replaced by Newtown and Camperdown.

Newtown was recreated in 1927 and combined with part of Annandale and renamed Newtown-Annandale in 1950.