Gerald Allan "Jerry" Sohl Sr. (December 2, 1913 – November 4, 2002) was an American television scriptwriter and science fiction author who wrote for The Twilight Zone (as a ghostwriter for Charles Beaumont), Alfred Hitchcock Presents, Star Trek: The Original Series (once using the pseudonym "Nathan Butler"), and other shows. He wrote more than twenty novels as well as feature film scripts. He also wrote the non-fiction works Underhanded Chess and Underhanded Bridge in 1973.

He wrote or co-wrote two episodes of the original series in 1964:

• "The Invisible Enemy"
• "Counterweight" (with Milton Krims)