Sadasiva Brahmendra (15th Century) was a saint, composer of Carnatic music and Advaita philosopher and Sishya of the great saint Shri Paramasivendra Saraswati (57th Shankaracharya of Moolamnaya Sarvajna Shri Kanchi Kamakoti Peetham), who lived near Thiruvenkadu, Tamil Nadu, during the 15th/16th century.

Even Today, many saints from big and small mathas come and prostrate at his adhisthanam to pay their respects to him and his guru parampara.

[2] Sadasiva was born in 15th Century into a Telugu Brahmin couple Moksha Somasundara Avadhaani and Parvati.

His contemporaries such as Sridhara Venkatesa Ayyaval and Sri Bhagvan Nama Bodendral (59th Shankaracharya of Moolamnaya Sarvajna Shri Kanchi Kamakoti Peetham) lived in the nearby areas at that time.

He took Sanyasa from a very Old Saint near Thiruvisanallur and reached Thiruvenkadu and in-turn became the sishya of Sri Paramasivendra Saraswati (57th Shankaracharya of Moolamnaya Sarvajna Shri Kanchi Kamakoti Peetham) who was staying there.

[6] On the river banks of Cauvery in Mahadhanapuram, he was asked by some children to be taken to Madurai, more than 100 miles away, for an annual festival.

[7] He also installed the Hanuman Murthi in the Prasanna Venkateswara temple at Nalu Kal Mandapam in Thanjavur.

[12] He instructed king of Tanjore to start the Saraswathi Mahal Library which runs till date.

Kaivalya Amrita Bindu based on teachings of upanishads The following works are ascribed to Sri Brahmendral but no printed version is available.

Some of these are [1][20] Character of Sadasiva Bramhendra is portrayed in the Tamil movie Mahashakti Mariamman Sivan Sar, a great saint and younger brother of Kanchi Mahaperiyava Shri Chandrashekarendra Saraswati (68th Sankaracharya of Kanchi Kamakoti Peetham) has written a detailed life history of Sri Brahmendral and venerated in his magnum opus book "Yenipadigalil Manithargal" Tamil writer Balakumaran has written a novel Thozhan based on the life of Sri Sadasiva Brahmendra.