The veteran academic passed away around 3:30pm at the United Hospital in Gulshan, NSU Head of Public Relations Belal Ahmed told the Dhaka Tribune.
Siddiqi was professor emeritus at the business school of Brac University.
During his time at NSU, he founded and served as the dean of NSU business school, before serving as its vice-chancellor for more than a decade.
In his academic career that spanned more than 50 years, he published a number of books and journals.
