Somasi Mara Nayanar, also known as Somasi Maranar, Somasi Marar, Somasimarar and Somasira Nayanar, is a Nayanar saint, venerated in the Hindu sect of Shaivism. He is generally counted as the thirty-third in the list of 63 Nayanars. He is also called Marar, Maran and Mara Nayanar, names he shares with Ilayankudi Mara Nayanar. The two Nayanars are generally differentiated by the prefixes "Somasi" and "Ilayankudi". He was a contemporary and devotee of Sundarar (8th century CE).