Datuk Mahadev Shankar was a Malaysian lawyer and judge who served on the High Court from 1983 and on the Court of Appeal from 1994 until he retired in 1997. He was one of the early commissioners of the Human Rights Commission of Malaysia (Suhakam) and sat on several Royal Commissions of Inquiry. He died at Shah Alam Hospital on 26 October 2026, aged 94.

Born in Kuala Lumpur in 1932, he was called to the Bar at the Inner Temple in 1955 and became a partner at Shearn Delamore and Company in 1961.