Sthanu Ravi Varma (Early Malayalam and Tamil: Ko Tanu Iravi), known as the Kulasekhara, was the Chera Perumal ruler of Kerala in southern India from 844/45 to 870/71 AD.

[15] The direct authority of the Chera Perumal king was restricted to the country around capital Makotai (Mahodaya, present-day Kodungallur) in central Kerala.

[18] It is known that the two rulers jointly conferred military honours on a chief of Tanjore called Vikki Annan (who was the husband of Kadamba Mahadevi), probably a Ganga prince.

The inscription records that Ayyan Adikal granted land and serfs to a Christian church at Quilon, built by Mar Sapir Iso, and entrusted its maintenance to trade guilds anjuvannam and manigramam.

The wife of Vikki Annan, who was honoured by the king Kandan Rajakesari Varma who was the possessor of several elephants ["tondai-nadu-pavina-cholan-pal-yanai-ko-kandan"] and by the Cheraman Ko Tanu Iravi, with [the privilege of using] the seat [of honour], the chauris, the palanquin, the drum, a palace, [royal] dinner, [participation in it perhaps] and the bugle and [who was presented] with a battalion of elephants and the hereditary title of Sembiyan Tamilavel - Kadamba Mahadevi gave to the god Mahadeva at Tiruneyyttanam a perpetual lamp, for which the number of sheep given by her is a hundred.

My these [charities] be under the protection of the several mahesvaras.An anonymous work called Padmapada Acharya Charita says that the protagonist who was the disciple of philosopher-theologian Sankara flourished in time of king "Kulasekhara".

[36] Scholars generally consider this a result of confusion on the part of the commentators (between Sthanu Ravi Kulasekhara and Rama Rajasekhara) who were separated in time from Vasubhatta.

angartvambara nanda devamanubhir yate dinanam ganegraste tigma mayukhamalinitamobhute parahne diviprsta praggrahanad dvitiyaghatika grasa pramanam raverbharta sri kulasekharena vilasad velavrtaya bhuvaevam sakabdah punariha candra randhramuni sankhyaya asambhiravagatahIt was on the basis of certain statements in Laghu Bhaskariya Vyakha, the date coronation of Ravi Kulasekhara was fixed at 844 AD.