The first open university in India was

The first open university in India was the Andhra Pradesh Open University, founded in 1982.

Indira Gandhi National Open University came later, in 1985, as the national open university.

Delhi University is a conventional university, not the first open one.

A 'none' response is unwarranted since a clear first exists.

It is now known as Dr B. R. Ambedkar Open University.

It pioneered open and distance learning at the state level.