Srivaikundam Duraisamy Subbulakshmi (or S. D. Subbulakshmi) was a Tamil film actress and singer who was active in the 1930s and 1940s. She was the wife of film director K. Subramanyam. She is credited with having introduced the legendary singer and family friend of hers, M. S. Subbulakshmi to Tamil cinema and mentored her in her early days.