原文為莫洛托夫雞尾酒 (Molotov cocktail), 又稱汽油彈、燃燒彈(瓶)或簡稱莫洛托夫(英文用法)，is a generic name used for a variety of improvised incendiary weapons. 由於製作容易，使它成為游擊隊及街頭暴民常用武器。燃燒瓶的主要構造為some form of easily breakable vessel or container, often玻璃瓶，裝有易燃液體例如汽油or napalm與surfactants或其他粘稠物混合而成，瓶口上紮上wick, often of布塊作引，讓其沾透易燃液體like kerosene.
In its simplest form, a Molotov cocktail is a glass bottle containing gasoline usually with a source of ignition such as a burning cloth wick held in place by the bottle's stopper. The wick is usually soaked in alcohol or paraffin, rather than petrol.
In action the fuse is lit and the bottle hurled at a target such as a vehicle or fortification. When the bottle smashes on impact, the ensuing cloud of gasoline droplets and vapor are ignited, causing an immediate fireball followed by a raging fire as the remainder of the fuel is consumed.
Other flammable liquids such as wood alcohol and turpentine have been used in place of petrol. Thickening agents such as tar, strips of tire tubing, sugar, animal blood, XPS foam, egg whites, motor oil, rubber cement, and dish soap have been added to help the burning liquid adhere to the target and create clouds of thick choking smoke.