2015 Amherst Lord Jeffs football team

The 2015 Amherst Lord Jeffs football team was an American football team that represented Amherst College as a member of the New England Small College Athletic Conference (NESCAC) during the 2015 NCAA Division III football season. In their 19th year under head coach E. J. Mills, the Lord Jeffs compiled an 8–0 record, won the NESCAC championship, and outscored opponents by a total of 221 to 79.

Key players included Anthony Bongiorno and Jaymie Spears. Jimmy Fairfield-Sonn received the 20th annual Joseph P. Zabilski Award, recognizing the top odffensive and defensive players in New England for Divisions II and III.

The 2015 season was one of seven perfect seasons in the history of Amherst's football program, the others coming in 1942, 1964, 1984, 2009, 2011, and 2014.

During the 2015 football season, the Amherst faculty and student body voted to remove "Lord Jeff" as the school's mascot. The school's trustees affirmed the decision in January 2016. The decision was based on the historical namesake (Jeffery Amherst, 1st Baron Amherst) actions against indigenous people in the 18th century. The school's athletic teams became known as the "Amherst Mammoths" starting with the 2016 football season.

The team played its home games at Pratt Field in Amherst, Massachusetts.