Petrus Jacobus "Peter" Marais (born 4 September 1948) is a retired South African politician who served as a Member of the Western Cape Provincial Parliament.

Marais joined the Freedom Front Plus in January 2019 and consequently became the party's Western Cape Premier candidate for the 2019 election.

In 1998, the newly-elected Premier of the Western Cape, Gerald Morkel, appointed Marais to the post of Provincial Minister of Health and Welfare.

[5][6] Marais was elected Premier of the Western Cape on 5 December 2001 and served until his resignation on 3 June 2002 amid allegations of sexual harassment.

[8][9] He alongside Danny Titus established the Brown Empowerment Movement (Afrikaans: Bruin Bemagtiging Beweging) in June 2013.

[11] In January 2019, Leader of the Freedom Front Plus, Pieter Groenewald, announced Marais as the party's Western Cape Premier candidate for the general election on 8 May.