1984 Amherst Lord Jeffs football team

The 1984 Amherst Lord Jeffs football team was an American football team that represented Amherst College as a member of the Little Three Conference during the 1984 NCAA Division III football season. In their 26th year under head coach Jim Ostendarp, the Lord Jeffs compiled an 8–0 record, won the Little Three championship, and outscored opponents by a total of 192 to 56.

The 1984 season was the third perfect season in the history of Amherst's football program. The first was 1942, the second was 1964,and others followed in 2009, 2011, 2014, and 2015.

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