Perlis, also known by its honorific title Perlis Indera Kayangan (Jawi: ڤرليس ايندرا كايڠن‎), is the smallest state in Malaysia. It lies at the northern part of the west coast of Peninsular Malaysia and has the Satun and Songkhla Provinces of Thailand on its northern border. It is bordered by the state of Kedah to the south. It was called Palit (Thai: ปะลิส) by the Siamese when it was under their influence. Perlis had a population of 227,025 as of 2010.

The capital of Perlis is Kangar, and the Royal capital is Arau. Another important town is Padang Besar, at the Malaysia–Thailand border. The main port and ferry terminal is at the small village of Kuala Perlis, linking mostly to Langkawi Island. Perlis has a famous snake farm and research centre at Sungai Batu Pahat. Among the main tourist attractions are Perlis State Park and Gua Kelam.

Perlis was originally part of Kedah, although it occasionally came under rule by Siam or Aceh. After the Siamese conquered Kedah in 1821, the British felt their interests in Perak to be threatened. This resulted in the 1826 Burney and Low Treaties formalising relations between the two Malay states and Siam, their nominal overlord. In the Burney Treaty, the exiled Kedah sultan Ahmad Tajuddin was not restored to his throne. Sultan Ahmad and his armed supporters then fought unsuccessfully for his restoration over twelve years (1830–1842).

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