Jennell Allyn Jaquays was born on October 14, 1956 and passed away on January 10, 2024 was an American game designer, video game artist, and illustrator of tabletop role-playing games. She was most known for her work on Dungeons & Dragons.

Jennell grew up in Michigan and graduated from Spring Arbor College in 1978 with a degree in Fine Art. While in college, she became interested in science fiction and fantasy gaming. She started playing Dungeons & Dragons in 1975, and created the Fantastic Dungeoning Society with several of her college friends, a group of friends that went on to publish one of the earliest periodicals for role-playing games, The Dungeoneer.

After graduating, Jennell worked at Judge Guild, where she worked on two stand-alone D&D modules for Dungeons & Dragons, Dark Tower and Caverns of Thracia, which were completed before she left the company in October 1979.

In the 1980s, Jennell started working on video games too, with publishers including TSR, Chaosium, West End Games, Flying Buffalo, and Iron Crown Enterprises. She produced illustrations for Game Designers' Workshop (GDW), most notably creating all the starship illustrations in Traveller Supplement 9: Fighting Ships.

Outside of her career, Jennell was also an activist, and was the creative director for the Transgender Human Rights Institute in Seattle. She was integral in the petition to create Leelah's Law, which outlawed conversion therapy of LGBT youth. In response to the petition, President Barack Obama called for the banning of conversion therapy for minors in April 2015.