6MX is a Russian watch manufacture established in Moscow in 1997, with origins in a workshop founded at the First Moscow Watch Factory in 1947.

Registered as a trademark in 2016, 6MX produces marine chronometers, deck watches and water-resistant wristwatches. Its wristwatch range includes models with fiberglass cases. The manufacture also released the limited-edition K-278 for military deep-sea divers, designed to withstand water pressure at depths of up to 1,100 metres.