The 2018–19 William & Mary Tribe men's basketball team represented the College of William & Mary during the 2018–19 NCAA Division I men's basketball season.

The Tribe, coached by 16th-year head coach Tony Shaver, played their home games at Kaplan Arena in Williamsburg, Virginia as members of the Colonial Athletic Association.

Street & Smith's preseason basketball preview rated William & Mary with the toughest schedule in the CAA.

[1] The Tribe finished the 2017–18 season 19–12, 11–7 in CAA play to finish in fourth place.

They defeated Towson in the quarterfinals of the CAA tournament before losing in the semifinals to College of Charleston.