Open outcry is a method of communication between professionals on a stock exchange or futures exchange typically on a trading floor. It involves shouting and the use of hand signals to transfer information primarily about buy and sell orders. The part of the trading floor where this takes place is called a pit.

Open outcry was a popular method for communicating trade orders in trading pits before 2010. The verbal and hand signal communication used by traders at stock, option and futures exchanges are now rarely employed, replaced by faster and more accurate electronic order systems.