The 1990 Boston Marathon was the 94th running of the annual marathon race in Boston, United States, which was held on April 16. The elite men's race was won by Italy's Gelindo Bordin in a time of 2:08:19 hours and the women's race was won by Portugal's Rosa Mota in 2:25:24.
A total of 7950 runners finished the race, 6516 men and 1434 women.