Greg Stolze (born 1970) is an American novelist and writer, whose work has mainly focused on properties derived from role-playing games.

Stolze has contributed to numerous role-playing game books for White Wolf Game Studio and Atlas Games, including Demon: the Fallen. Some of Stolze's recent work has been self-published using the "ransom method", whereby the game is only released when enough potential buyers have contributed enough money to reach a threshold set by the author.

Together with John Tynes he created and wrote the role-playing game Unknown Armies, published by Atlas Games. He has also co-written the free game NEMESIS, which uses the One-Roll Engine presented in Godlike and the so called Madness Meter derived from Unknown Armies.