Ayer Lanas is a state constituency in Kelantan, Malaysia, that has been represented in the Kelantan State Legislative Assembly.
The state constituency was first contested in 1995 and is mandated to return a single Assemblyman to the Kelantan State Legislative Assembly under the first-past-the-post voting system.
As of 2020, Air Lanas has a population of 37,440 people.
According to the gazette issued on 30 March 2018, the Bukit Bunga constituency has a total of 10 polling districts.