Maraicayar or Maraicar refer to a distinctive Tamil and Malayalam-speaking Muslim people of the states of Tamil Nadu and Kerala in India and Sri Lanka. The word Maraicayar originates from the combinations of Tamil words, maraikalam(wooden boat)+rayar(king). Moor is According to many other historians, Moppila or Moplah is Maha Pillai (great son) and Marakkar means (Marakkalam is a wooden boat) ‘boatmen’.
KVK Iyer says in his history of Kerala that Marakkar was a prized title given by the Zamorin of Calicut. Derived from Marakka Rayar it signifies the captain of a ship Rayar (Captain) of Marakkalam (ship)
Traditionally, the Maraicars engaged in mercantile commerce. They can be found along coastal areas of the states of Kerala and Tamil Nadu in India. Also in Sri Lanka.
The Jainism and Buddhism was under stress by resurgent Hinduism when Islam was introduced to Tamil Nadu and Kerala regions of southern India (650–750 AD). The majority of Jains embraced Islam and they still retain some Jain habits.[9]
Maricar's hail from Kayalpatnam, a seashore town in Southern Tamil Nadu, India which is steeped in history. Arab traders had a flourishing business in South India with the Pandian Kingdom (capital at Madurai), the rulers of Malabar (Kerala) and Ceylon (Sri Lanka). Kayalpatnam was having near a major international port Kulasekharapatnam with trade relations with the Arabs, Europeans & Chinese. The great international traveler of yore, Marco Polo had visited Kayalpatnam in the Middle Ages and described it as a thriving international port.
With the advent of Islam, these Arab traders introduced the new faith in the region. They married amongst the local population and their descendents are the present day population of Kulasekarapatnam, Kayalpatnam, Kilakarai, Maricarpatnam, Adirampattinam, Tondi, Karaikal etc. along the Tamil Nadu coast; many settlements on the Malabar / Kerala coast and the southern sea coast of Ceylon like Galle, Batticola.