Group
- D20PRO / Mesa Mundi11
- DGS Games4
- DMK Creative, LLC1
- DPH Games Inc.14
- Dancing and Dragons4
- Dark Jewel Games3
- Darklight Interactive2
- David Niecikowski, PhD3
- Day 202
- Days of Wonder3
- Dead Alive Games5
- Dead Tree Studios2
- Defenders of Kobold1
- Deren Games7
- Devious Weasel Games10
- Devir Games8
- Diceborn Games Ltd.4
- Divination4
- Dnvestte RPG1
- Doctor Beuhler Events2