At the university, the Duchess of Sussex gave her first speech of the couple's tour.
Meghan chatted with one vendor and briefly greeted others at Suva Market, where throngs of people spilled into surrounding streets.
The Duchess of Sussex and her husband Prince Harry are now completing their royal Australian tour, where Meghan has donned outfits by a plethora of homegrown Australian labels-however, this could be her most memorable fashion moment on the entire trip.
A Kensington Palace spokeswoman said her visit was cut short due to crowd management issues.
The two are now on their official 16-day Autumn tour visiting cities in Australia, Fiji, Tonga and New Zealand.
The Duke and Duchess of Sussex started their Fiji tour on Tuesday.
Meghan, who is four months pregnant, and husband Prince Harry are on the 9th day of their 16-day tour of the South Pacific.
The Duke later travelled to Colo-i-Suva Forest Park, where he planted a tree and unveiled a plaque to mark its dedication.
"It was through scholarships, financial aid programmes and work-study where my earnings from a job on campus went directly towards my tuition, that I was able to attend university".
Meghan addressed students at the University of the South Pacific on Wednesday and spoke of her struggle to finance her higher education and her "personal feeling of pride and excitement" when she studied for her degree.
Later the couple waved to thousands of Fijians from the balcony of the historic Grand Pacific Hotel in Suva City after a state reception. According to US Weekly, the couple was rumored to be making stops in New York, California, and Washington, D.C during their visit.
"After a busy programme, The Duke and Duchess have chose to cut back The Duchess's schedule slightly for the next couple of days, ahead of the final week and half of the tour", a statement from Kensington Palace read, according to the Express.