Trincomalee (ˌtrɪŋkoʊməˈliː; திருகோணமலை; ත්රිකුණාමළය), also known as Gokanna and Gokarna, is the administrative headquarters of the Trincomalee District and major resort port city of Eastern Province, Sri Lanka. Located on the east coast of the island overlooking the Trincomalee Harbour, north-east of Colombo, south-east of Jaffna and miles north of Batticaloa, Trincomalee has been one of the main centres of Sri Lankan Tamil language speaking culture on the island for over two millennia. With a population of 99,135, the city is built on a peninsula of the same name, which divides its inner and outer harbours. People from Trincomalee are known as Trincomalians and the local authority is Trincomalee Urban Council. Trincomalee city is home to the famous Koneswaram temple from where it developed and earned its historic Tamil name Thirukonamalai. The town is home to other historical monuments such as the Bhadrakali Amman Temple, Trincomalee, the Trincomalee Hindu Cultural Hall and, opened in 1897, the Trincomalee Hindu College. Trincomalee is also the site of the Trincomalee railway station and an ancient ferry service to Jaffna and the south side of the harbour at Muttur.
The recorded history of Trincomalee spans more than two and a half thousand years, beginning with civilian settlement associated with the Koneswaram temple in the pre-modern era. One of the oldest cities in Asia, it has served as a major maritime seaport in the international trading history of the island with South East Asia. From its suburban village of Kankuveli, some of Asia's earliest medical research at the "Agathiyar Thapanam", the Siddhar Tamil medical university established by Agastya, helped spread Tamil Tamraparniyan culture across the continent. In the ancient world, it was successively the capital of eastern kingdoms of the Vanni country, developing under the Anuradhapura Kingdom, Pallava Dynasty, Chola Dynasty, Pandyan Dynasty, the Vannimai chieftaincies and the Jaffna kingdom through the Koneswaram shrine's revenue.