Martingale

Martingale may refer to:


 * Martingale (probability theory), a stochastic process in which the conditional expectation of the next value, given the current and preceding values, is the current value
 * Martingale (tack) for horses
 * Martingale (collar) for dogs and other animals
 * Martingale (betting system), in 18th century France
 * a dolphin striker, a spar aboard a sailing ship
 * In the sport of fencing, a martingale is a strap attached to the sword handle to prevent a sword from being dropped if disarmed
 * In the theatrical lighting industry, martingale is an obsolete term for a twofer, or occasionally a threefer
 * Martingale (clothing), a strap controlling the fullness of the clothing material.