Greg K. Poehlein is a game designer. In the 1980s, he worked for FASA on the Star Trek: The Role Playing Game series, co-designing it with David F. Tepool and Guy W. McLimore, Jr..

He contributed to several books in the line, including Ship Construction Manual, Trader Captains and Merchant Princes, The Klingons, Star Trek III Sourcebook Update, The Triangle, and The Romulans (among others). While with the company, he also co-designed the Doctor Who RPG with McLimore and Tepool. The three also collaborated on a portion of the Castle Greyhawk set from TSR.

Poehlein continued to work with McLimore writing for R. Talsorian Games before founding Microtactix Games with him.