Anizham Thirunal Marthanda Varma (; 1706 – 7 July 1758) was the founding monarch of the southern Indian Kingdom of Travancore (previously Venadu) from 1729 until his death in 1758. He was succeeded by Rama Varma ("Dharma Raja") (1758–98).

Raja Marthanda Varma defeated the Dutch East India Company forces at the Battle of Colachel in 1741. He also put an end to the Nair-Brahmin Administrative setup, Ettuveetil Pillamar and the Ettara yogam council and took the full power as the king. The Yogakars and Pillamars were always against the Royal Family to which Raja Marthanda Varma belonged. (Padmanabhaswamy Temple Judgement page :16) He then adopted a European mode of discipline for his army and expanded his kingdom northward (to what became the modern state of Travancore). He undertook many irrigational works, built roads and canals for communication and gave active encouragement to foreign trade. In January, 1750, Marthanda Varma decided to "donate" his kingdom to the last Tiruvadi Sri Padmanabha (Vishnu) and thereafter rule as the deity's "vice-regent" (Sri Padmanabha Dasa). The Thampi brothers, sons of Rama Varma, immediately revolted against Marthanda Varma (who was the legitimate successor on the basis of the Nair matrilineal system) with the assistance of a Tamil army. After reducing the power of the Ettuveetil Pillamar, the Nair aristocracy, and their associates, the Yogakkars, Marthanda Varma turned his attention to central Kerala. He realised that Dutch power in Kerala stemmed from their flourishing spice trade at the port of Kochi. He set out to conquer the major spice-producing areas supplying cargo to Kochi. After declaring a state monopoly on pepper in Travancore in 1743, between then and 1752, the king annexed Quilon, Kayamkulam, Thekkumkur, Vadakkumkur and Purakkad to Travancore (thereby delivering a serious blow to the commerce of the Dutch).

  • In 1731, the port of Kollam (Quilon) - which was ruled by a branch of the Venadu family to which Marthanda Varma also belonged - was defeated and its last chief was made to sign a treaty allowing the annexation of his chiefdom by Travancore after his death. The chief was brought to Thiruvananthapuram and lodged almost as a state prisoner in the Valikoikkal Palace. A contingent of the Travancore army under Dalavay Arumukham Pillai was stationed at Kollam.
  • Following this, Ambalapuzha, Kottayam and Changanassery were also annexed to Travancore by 1753. The principality of Meenachil was also annexed.

The ascent of Travancore seems to have been particularly rapid after about 1749. Wanting the status of a (Samantha Kshatriya), he performed a set of elaborate and expensive Mahadana rituals as which included the Hiranyagarbha.

Marthanda Varma started normalising the relationship between the royal family (the ruler) and the Padmanabhaswamy Temple (the administrative body of the temple) as soon as he came to the throne. He undertook the Prayaschittam retribution that was long overdue from the earlier Venadu kings.

Thiruvananthapuram became a prominent city in Kerala under Marthanda Varma.

Purpose of Thrippadidanam

  • Separation of the newly formed "unitary kingship" (and political power) from the disputes and frictions in the civil society. He was succeeded by his nephew Rama Varma ("Dharma Raja").