John "Jac" Weller (January 6, 1913 – August 18, 1994) was an American college football player, firearms expert and military historian.

[2] During Weller's three seasons at Princeton, the football team compiled a record of 25 wins against a single loss.

Weller later recalled, "We had one of the finest bunch of football players ever to come to Princeton...in four years, no major opponent ever scored more than one touchdown on us.

[4] After graduating, and marrying Cornelia Murray, Weller settled in Princeton, New Jersey, where he operated a real estate and insurance business.

[3] Weller maintained a lifelong interest in firearms and was an honorary curator of the West Point Museum in the 1960s.