Dozens of former and current students, together with staff and University dignitaries gathered at mima for the prestigious party.
There was a champagne reception which offered people the chance to reminisce about their time at Teesside, together with live music, a caricature artist, speeches and a tour of mima.
Sarah Irving, Alumni Relations Officer, said: ‘We were delighted that so many people came along to celebrate 21 years of our MBA.
‘It is a real milestone and the event was a great opportunity to meet old classmates and catch up. We hope to do more events for other courses in the future.’