Who plays Jeff in Friday the 13th Part 2?

Jeff is played by Bill Randolph.

How is Jeff connected to other characters?

Jeff has 3 mapped relationships in Friday the 13th Part 2. Explore the interactive relationship map for details.

Jeff — Conflict Killer And Victim — Jason (Warrington Gillette)
Jeff is killed during Jason's attack on the counselors.

Jason impales Jeff with a spear while Jeff and Sandra are having sex.
Jeff — Romantic Boyfriend And Girlfriend — Sandra (Marta Kober)
Their romance is directly established and becomes part of the massacre.

Sandra is explicitly identified as Jeff's girlfriend, and the two later have sex before Jason impales them.
Jeff — Professional Instructor And Trainee — Paul (John Furey)
Jeff is one of Paul's trainees.

Jeff is listed among the counselors attending Paul's training camp.