Lee is a single-member electoral district for the South Australian House of Assembly.

Named after the women's suffrage campaigner Mary Lee, it is an 18.9 km2 suburban electorate on Adelaide's north-western beaches, taking in the suburbs of Grange, Royal Park, Seaton, Semaphore Park, Tennyson, West Lakes, and West Lakes Shore.

The first member for Lee, elected at the 1993 election, was controversial Liberal MP Joe Rossi, with the governments smallest margin of 1.1 percent; Rossi's election was unexpected, but was part of a large swing away from Labor throughout the state.

Port Adelaide Enfield Mayor Gary Johanson, who contested the 2012 Port Adelaide by-election as an independent, contested Lee at the 2014 election.

Labor candidate Stephen Mullighan won the election with a reduced 4.5 percent two-party preferred margin.