Jeffrey Ellis Farnsworth
- Bats Right, Throws Right
- Height 6' 2", Weight 190 lb.
- School Okaloosa-Walton College
- High School Pensacola Catholic High School
- Debut April 3, 2002
- Final Game September 28, 2002
- Born October 6, 1975 in Wichita, KS USA
He and his contemporary Kyle Farnsworth have been the only two major leaguers with the last name Farnsworth.
Farnsworth signed with Nettuno for 2009. In the first stage of the 2009 European Cup, he allowed one run in six innings and fanned 8 in a loss to the L&D Amsterdam Pirates, getting outdueled by Adam Blackley. He made his Italian Baseball League debut on April 11, starting the second half of a doubleheader after Giovanni Carrara got the call in the opener. Jeff fanned 10 and allowed 2 runs in six innings versus Godo but got a no-decision in a 4-3 Nettuno win.