Jeffrey Lynn Green is an American retired professional stock car racing driver and crew chief. He most recently worked for RSS Racing as the crew chief for their No. 28 car in the ARCA Menards Series, driven by Kyle Sieg, and also competed part-time in the NASCAR Xfinity Series as a start and park driver for the team.

RSS Racing is an American professional stock car racing team that currently competes in the NASCAR Xfinity Series. The team is owned by Rod Sieg and Pamela Sieg. The team currently fields 3 cars including the No. 28 full-time for Kyle Sieg, the No. 29 full-time for Blaine Perkins, and the No. 39 full-time for Ryan Sieg. They also field the No. 38 part-time for C. J. McLaughlin and Matt DiBenedetto in a partnership with Viking Motorsports.