Russian pyramid, also known as Russian billiard is a form of pocket billiards played on a modified snooker table with narrower pockets. It is popular across Eastern Europe as well as countries of the former Soviet Union/Eastern Bloc. A variant with colored balls modeled on those of pool is known as Russian pool. In Western countries, the game is known as pyramid billiards, or simply pyramid within the professional circle.

There are several rule variations of Russian pyramid. All games begin with fifteen numbered white balls racked in a pyramid pack, as in a straight pool, eight-ball and blackball. Players may pocket any object balls on the table regardless of number, and the first player to pocket eight or more balls wins the frame. In addition, shots do not have to be called. Depending on the game variant some specific balls may have to be in specific positions within the rack.

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