The ABVP came second in all four posts, pushing the BAPSA (Birsa Ambedkar Phule Students' Association) to third.
The ceremony, in which all the 31 councillors also took oath, was attended by a large section of supporters of the Left-Unity alliance comprising the All India Students Association (AISA), Students' Federation of India (SFI) and Democratic Students Federation (DSF).
New JNUSU President Geeta Kumari, Vice President Simone Zoya Khan, General Secretary Duggirala Srikrishna and Joint Secretary Shubhanshu Singh will take out a "Unity March" in the campus tonight.