Lahaina (Hawaiian: Lāhainā) is the largest census-designated place (CDP) in West Maui, Maui County, Hawaii, United States and includes the Kaanapali and Kapalua beach resorts. As of the 2010 census, the CDP had a resident population of 11,704. Lahaina encompasses the coast along Hawaii Route 30 from a tunnel at the south end, through Olowalu and to the CDP of Napili-Honokowai to the north. During the tourist season, the population can swell to nearly 40,000 people.
Lahaina's popularity as a tropical getaway has made its real estate some of the most expensive in Hawaii; many luxury homes and condos sell for more than $5 million.
In antiquity Lahaina was the royal capital of Maui Loa, aliʻi nui ("high chief") of the island of Maui, after he ceded the royal seat of Hana to the ruler of Hawaii Island. In Lahaina, the focus of activity is along Front Street, which dates back to the 1820s. It is lined with stores and restaurants and often packed with tourists. The Banyan Court Park features an exceptionally large banyan tree (Ficus benghalensis) planted by William Owen Smith on April 24, 1873, to commemorate the 50th anniversary of the arrival of Christian missionaries. It is also the site of the reconstructed ruins of Lahaina Fort, originally built in 1832. It is the largest Banyan Tree in the United States.