蹦极（英语发音：/ˈbʌndʒiː/；英语：Bungee Jumping或「Bungy Jumping」，又译「高空弹跳」，「蹦极」，「绑紧跳」），是一种人们利用有弹性的绳索一边系着身体或足踝，另一边系着高处平台（通常是数十至过百公尺），然后从高台一跃跳下的活动。

蹦极时，人由于自身所受的重力而下落，当玩者跃下时，蹦极绳会伸展从而吸收坠下的能量，被拉伸的蹦极绳又会产生向上的弹力，把人拉上去。正式在这上上下下的振荡中，玩家体会到了极大的刺激。最终，随着能量的消失，玩者的摆动会静止。

高空弹跳虽然在安全上尽力做了许多措施，但仍具有危险性，如过度刺激引发急性心血管病变等，因此业者都会要求参与者签下死伤风险的免责约定文档，让参与者了解及自行承担可能的后果。

Not to be confused with reverse bungee.

Bungee jumping (/ˈbʌndʒiː/; also spelt "Bungy" jumping, which is the usual spelling in New Zealand and several other countries) is an activity that involves jumping from a tall structure while connected to a large elastic cord. The tall structure is usually a fixed object, such as a building, bridge or crane; but it is also possible to jump from a movable object, such as a hot-air-balloon or helicopter, that has the ability to hover above the ground. The thrill comes from the free-falling and the rebound. When the person jumps, the cord stretches and the jumper flies upwards again as the cord recoils, and continues to oscillate up and down until all the kinetic energy is dissipated.