The Microsoft billionaire's visit follows those of rapper, Kanye West, as well as Jim Brown and athlete, Ray Lewis.
Gates made the trip on Tuesday, December 13, 2016, to discuss issues relating to innovation in energy, health and education, and American leadership in foreign aid, TMZ reports.
His appearance follows the recent visits of the likes of Jim Brown, Ray Lewis and rapper, Kanye West.
West's patronage of Donald Trump has raised brows due to the president-elect's divisive comments against migrant communities, especially the black people.
The pair were spotted in a picture prior to the rapper's departure from Trump Tower.
Both were said to have been in a meeting for fifteen minutes.
Trump spoke highly of his relationship with the rapper, but both kept mum regarding the details of their meeting.