The following order types are used in futures trading.

Market Order: An order to buy or sell a futures contract at whatever price is obtainable at the time it is entered in the pit, or other trading platform. (CFTC Definition)

Limit Order: An order in which the customer specifies a minimum sale price or maximum purchase price, as contrasted with a market order, which implies that the order should be filled as soon as possible at the market price. (CFTC Definition)

Stop Order: This is an order that becomes a market order when a particular price level is reached. A sell stop is placed below the market, a buy stop is placed above the market. (CFTC Definition)

Stop limit order: An order that goes into force as soon as there is a trade at the specified price. The order, however, can only be filled at the stop limit price or better. (CFTC Definition)