Kamla Persad-Bissessar ; born Kamla Susheila Persad, 22 April 1952), often referred to by her initials KPB, is a Trinidadian and Tobagonian lawyer, politician and educator who is the Leader of the Opposition of Trinidad and Tobago, political leader of the United National Congress (UNC) political party, and was the prime minister of Trinidad and Tobago from 26 May 2010 until 9 September 2015. She was the country's first female prime minister, attorney general, and Leader of the Opposition, the first woman to chair the Commonwealth of Nations and the first woman of Indian origin to be a prime minister of a country outside of India and the wider subcontinent.

The Leader of the Opposition is the leader of the largest political party in the House of Representatives that is not in government.