Famous Indian Computer Science / Math scientists [WIP]

Who are the famous Indian men and women in computers/math ? Help me make a list!
My list ofcourse (is incomplete I’m sure) and currently includes Ramanujan, (Honorary Indian) Alan Turing (born in India), Aryabhatta, Narendra Karmarkar, Agrawal–Kayal–Saxena of AKS primality test, email inventor Shiva Ayyadurai, Raj Reddy (CMU), late Rajeev Motwani, Madhu Sudan, Arokiasamy Paulraj, P Vaidyanathan, Venkatesan Guruswami, Ravi Sethi, Jitendra Malik, …
This is work-in-progress. Please leave comments, critiques below.