| Keishi Kameyama | |
| Nationality: | Japanese |
| Occupation: | Businessman |
| Founder and Chairman, DMM.com | |
| Spouse: | Married |
| Children: | 2 |
is a Japanese billionaire businessman, chairman of the internet company DMM.com, who made his initial fortune in pornography.
In 1999, Kameyama founded DMM.com,[1] and is its chairman.[2]
DMM started in pornography and "adult entertainment", and has "grown into a vast collection of enterprises".[3]
In August 2017, Kameyama had an estimated net worth of US$3.5 billion.[3]
Kameyama is married, with two children.[3]