МММ was a Russian company that perpetrated one of the world's largest Ponzi schemes of all time, in the 1990s. By different estimates from 5 to 10 million people lost their savings. According to contemporary Western press reports, most investors were aware of the fraudulent nature of the scheme, but still hoped to profit from it by withdrawing money before it collapsed.

In 2011, MMM re-opened as "MMM Global".

Founder: Sergei Mavrodi