Subramaniya Siva (4 October 1884 – 23 July 1925) was an Indian writer and activist during the Indian independence movement.
Subramaniya Siva was born in Batlagundu near Dindigul in erstwhile Madurai district of Madras presidency. He was born to Rajam Iyer. He joined the Indian freedom movement in 1908.
In 1908, he was arrested by the British and was the first political prisoner in Madras jail. While serving a prison term, he was afflicted by leprosy and was shifted to Salem jail. Since leprosy was regarded as a contagious disease, the British authorities forbade him to travel by rail after his release and hence he was forced to travel on foot. He continued to fight for independence and was incarcerated many times until 1922. He eventually succumbed to leprosy on 23 July 1925. He was the author of the journal Jnanabhanu and books Ramanuja Vijayam and Madhya vijayam.
The office of Dindugal district collector is named after as Thiagi Subramania Siva Maaligai after him. Bathlagundu bus stand is named after Siva. A memorial has been established at Papparapatti near Pennagaram in Dharmapuri district.