The surname Marais (Marsh in French) may refer to:
"Marais" from France:
Jean Marais (1913–1998), a French actor
Joseph Marais (presumably deceased), a French Olympic fencer
Marin Marais (1656–1728), a French Baroque music composer
Matthieu Marais (1664–1737), a French jurist and writer
Paul Godet des Marais (1647–1709), a French Bishop of Chartres
Roland Marais (c. 1685 – c. 1750), a French Baroque composer
"Marais" from the United States:
Anthony Marais (born 1966), an American writer
"Marais" from South Africa:
Erik Marais (living), a South African politician
Eugène Marais (1871–1936), a South African lawyer, naturalist, poet and writer
Hannes Marais (born 1941), a South African international rugby union player and captain
Jaap Marais (1923–2000), an Afrikaner nationalist and the leader of the far-right South African political party, the Herstigte Nasionale Party
Jessica Marais (born 1985), a South African-born Australian actress
Josef Marais (1905–1978), a South African singer
Kobus Marais (living), a South African politician
Lejeanne Marais (born 1989), a South African figure skater
Nic Marais (born 1980), a South African radio personality
Peter Marais (born 1948), a South African politician
SP Marais (born 1989), a South African rugby union player
Stephanus Le Roux Marais (1896–1979), a South African composer
Willie Marais (1928–2007), an Afrikaner nationalist and the leader of the Herstigte Nasionale Party
Heinrich Marais ( born 1993), an South African entrepreneur, businessman and owner of Comfort Cool Airconditioning & Electrical Contractors SA PTY.LTD.
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