General elections were held in the Northern Territory of Australia on 9 August 2008. Of the 25 seats in the Legislative Assembly, 23 were contested; two safe Labor seats were uncontested. The incumbent centre-left Labor Party (ALP), led by Chief Minister Paul Henderson won a narrow third term victory against the opposition centre-right Country Liberal Party (CLP), led by Terry Mills. Labor suffered a massive and unexpected swing against it, to hold a one-seat majority in the new parliament.

The Legislative Assembly of the Northern Territory is the unicameral legislature of the Northern Territory of Australia. The Legislative Assembly has 25 members, each elected in single-member electorates for four-year terms. The voting method for the Assembly is the full-preferential voting system, having previously been optional preferential voting. Elections are on the fourth Saturday in August of the fourth year after the previous election, but can be earlier in the event of a no confidence vote in the government. The most recent election for the Legislative Assembly was the 2020 election held on 22 August. The next election is scheduled for 24 August 2024.