Keishi Kameyama

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Keishi Kameyama
Born1960/1961 (age 58–59)[1]
Net worthUS$3.5 billion (August 2017)[1]
TitleFounder and chairman,

Keishi Kameyama (亀山 敬司, Kameyama Keishi, born 1960/61) is a Japanese billionaire businessman, chairman of the internet company, who made his initial fortune in pornography.

In 1999, Kameyama founded,[2] and is its chairman.[3]

DMM started in pornography and "adult entertainment", and has "grown into a vast collection of enterprises".[1]

In August 2017, Kameyama had an estimated net worth of US$3.5 billion.[1]

Kameyama is married, with two children.[1]


  1. ^ a b c d e "How a Billionaire Porn Film-Maker Transformed His Business". 23 August 2017. Retrieved 4 September 2017 – via
  2. ^ Worldfolio, The. " leads Japan Inc.'s innovation drive". Retrieved 4 September 2017.
  3. ^ Oi, Mariko (2 March 2015). "Rebooting innovation in Japan". Retrieved 4 September 2017 – via