New Bulgarian University (Bulgarian: Нов български университет, also known and abbreviated as НБУ, NBU) is a private university based in Sofia, Bulgaria.

Its campus is in the western district of the city, known for its proximity to the Vitosha nature park. The university also owns multiple other buildings across the country, as well as its own publishing house and a library.

Among the list of NBU Honorary Doctors and Honorary Professors are Richard Rorty, Thomas Sebeok, Wolfgang Iser, Terry Eagleton, Julia Kristeva, Jean-Pierre Vernant, Ralf Dahrendorf, Steve Forbes, Geert Hofstede, Ennio Morricone, Milcho Leviev, Raina Kabaivanska, Alexander Fol, Vera Mutafchieva, and Georgy Fotev.

Since 2004, NBU has been an accredited partner of The Open University Business School.

NBU was established on 18 September 1991 by Bogdan Bogdanov and a group of Bulgarian intellectuals with a resolution by the Bulgarian Parliament. NBU's main purpose was to modernise Bulgarian higher education. 2,500 students were welcomed during the first year. A test of general education was introduced in 1995 and established as a uniform standard for the reception of students in 1996.

NBU's Educational Museum was founded on 23 April 2010. The first exhibition was "Museum Network Resources". It was the final stage of the project "Educational Museum at New Bulgarian University". The project was funded by the National Fund for Research at the Ministry of Education, Youth and Science, the Cultural Heritage (study on national historic and culture legacy as a part of European culture heritage and advanced methods for preserving).

Since 2010, NBU is the home of 'The Slug Theater', where the university's drama club present their shows.

The campus consists of two buildings (Buildings 1 and 2) housing the Aula, Library, University Theater, NBU Museum, UniArt Gallery, Medical Center, and a Sports Center surrounded with open green spaces.