Queen Mathilde of Belgium met Chief Adviser Professor Muhammad Yunus on the sidelines of an event at the UN headquarters on Tuesday.
Former British prime minister Gordon Brown also called on Prof Yunus, as IMF Managing Director Kristalina Georgieva met the chief adviser as well at the UN headquarters.
Prof Yunus arrived in New York to attend the 80th UNGA session on Monday.
A commercial flight of Emirates airlines carrying the chief adviser and his entourages landed at the John F Kennedy International Airport, New York, at 3:00 pm (NY time) on Monday.