Who are some of the best faculty for Computer Science at Indian universities?

Dr. Kannan Karthik , Dept of Electronics and Electrical Engineering, IIT Guwahati. He regularly teaches courses like " Digital Communications " and "Multimedia Security" . He is PhD from University of Toronto. He makes complicated mathematical derivations look very simple and it was an incredible learning experience from his course. He is simply a genius and he may be one of the best professors in the world in above topics.

IIT Guwahati : (Computer Science) Vijaya Saradhi (prof in Machine Learning) Deepanjan kesh  (Highly Passionate) Saswata Shannigrahi (Algorithms) R Inkulu (One of the best profs in Algorithms in india)

IIT Bombay : S Sudarshan - Author of most awesome database book : Database Systems Concepts IIT Kharagpur :   P K Biswas - You can find his video lectures online. The way he has explained OS and CAO is just excellent. Totally lucid way you can ever imagine

DA-IICT, Gandhinagar (Dhirubhai Ambani Institute of Information & Communication Technology) Prof Anish Mathuria (Data Structures, Cryptography ) : Has an uncanny ability to make subject matter interesting and understandable. His exams and quiz are extremely well prepared and highly conceptual. Prof Sanjay Chaudhary (System Software, Operating Systems) :Extremely friendly to students. His lectures are very interesting. Prof Samaresh Chatterji (Calculus, Graph Theory) : His lectures are very interesting and interactive. Makes theoretical subject learning interesting. His lectures slides are very well prepared.

People forgot to mention Naveen Garg, IIT Delhi. I attended few classes of Data Structure. The way he explains the complex topics like Graphs is awesome.

Prof Rajaram  - IIT Kharagpur. I am not sure if he is still working in Kharagpur but he used to be one of the best professors that I had the pleasure to take Computer science courses under him. I attended the following two courses in his class. Neural Networks and Genetic Algorithms C Programming Language Surprisingly, he is from Mechanical Engineering Dept and not from Computer Science Dept.

CSE @ IIT Madras: Every professor in the dept. of CSE is the best professor. All  professors are experts in their area of research. It is not that easy to become a professor in the dept. of CSE. Since the question is asked 'some' of the best , I am writing about some of professors with whom I have done the courses !Prof. CPR: He is the first best teacher I have seen in IITM. He teaches Algorithm course with so much enthusiasm. The way of explanation is awesome. I loved all his lectures in Adv. DS course. He keeps always smile on his face. Prof. Ravindran: One of the most famous professor in the insti for his course 'Introduction to ML'. Though I have not done this course. I have got an opportunity do his Data Mining course (currently he is not teaching this course). He covers so many good and adv.topics in the ML and his assignments good. He conducts a prediction competition in ML course to get feel of small real world problem solving. He is a very good researcher in the area of ML(currently in Deep Learning and Reinforcement learning). Prof. CC: One of the best teacher in the dept. of CSE. He follows the simple and effective principle SEEK FIRST TO UNDERSTAND, THEN TO BE UNDERSTOOD (which is written on the white board in his office!) . I think everybody who sits in his classes will learn something before they leave the class. He is so punctual to the class and expects students to be on time. In one class of introduction to research, he talked about the value of time as follows: If student comes 5 mins late to the class, then it is only a waste of 5 mins, but if professor comes 5 mins late it is a waste of 50 mins (assume there are 10 students). He teaches subjects: Kernel Methods of Pattern Analysis (sort of Adv. ML!) , Computer Architecture (PG level).

Prof. Ranjani Parthasarathi, College of Engineering, Guindy, (CEG, Anna University) The person to learn Computer Architecture from. Several of her students are experts in the area and mention her as a major reason for their initial choice of the field. Her enthusiasm, energy and compassion are unparalleled and contagious! A major inspiration to all her students!

Prof. P P Chakraborty (PPC) - teaches algorithms, artificial intelligence, and also is the dean of SRIC - research body at IIT Kharagpur.