求生刀（英语：Survival knife或Rambo knife），通常作为特种部队在野外使用的小刀，因为以前有一些电影表示都是那些蓝波所使用的，所以又称为蓝波刀。

• 克里斯·里夫刀（Chris Reeve Knives），刀柄中空

• 装在M4卡宾枪上的M9刺刀

• 吉米·礼乐“下一代”第一滴血

• 前苏联AKM二式刺刀

• 贝尔·吉罗斯终极紧凑型求生刀

• USMC KA-BAR

• 美军研究和观察组于越战时使用的SOG刀

Survival knives are knives intended for survival purposes in a wilderness environment, often in an emergency when the user has lost most of his/her main equipment. Military units issue some type of survival knife to pilots in the event their plane may be shot down. Survival knives can be used for trapping, skinning, wood cutting and other uses. Hunters, hikers, and outdoor sport enthusiasts use survival knives. Some survival knives are heavy-bladed and thick; others are lightweight or fold in order to save weight and bulk as part of a larger survival kit. Their functions often include serving as a hunting knife. Features, such as hollow handles that could be used as storage space for matches or similar small items, began gaining popularity in the 1980s. Custom or semi-custom makers such as Americans Jimmy Lile, Bo Randall, and Chris Reeve are often credited with inventing those features.