大西洋蓝枪鱼（学名：Makaira nigricans）是大西洋特有的一种旗鱼，被IUCN列为次级保育类动物，。牠们主要吃海面上多种的生物。牠们会用其枪来刺、伤害或杀死猎物，之后再回来享用。大西洋蓝枪鱼是出名供垂钓的鱼，其肉质含有高脂肪，故具有很高的商业价值。

大西洋蓝枪鱼分布在大西洋的热带及温带海域，但较多出没于西部。牠们主要都会生活在海洋，远离陆地。雌鱼可以生长到比雄鱼重4倍，达到540-1800公斤。除了人类外，牠们只有少数天敌，世界自然保护联盟并未将牠们列为濒危物种。

The Atlantic blue marlin (Makaira nigricans) is a species of marlin endemic to the Atlantic Ocean. The Atlantic blue marlin (hereafter, blue marlin) feeds on a wide variety of organisms near the surface. It uses its bill to stun, injure, or kill while knifing through a school of fish or other prey, then returns to eat the injured or stunned fish. Marlin is a popular game fish. The relatively high fat content of its meat makes it commercially valuable in certain markets. It is the national fish of the Commonwealth of the Bahamas and is thus featured on its Coat of Arms.