外星人绑架（Alien abduction或者abduction phenomenon）是指被害者在主观记忆上能够回忆起曾经被秘密的，或者被强制性由某些明显是非人类的实体施以某类物理的或者精神过程。那些自己声称被诱拐过的人们一般被称作“被绑架者”（下文也可能称他们“被害者”）或者“经历者”。典型的个案中的被绑架者们接受过强制性的医学检查，并且检查他们的生殖系统。某些被绑架者曾经被警告过注意对环境的破坏或者核武器所带来的危害。一些被绑架者将这种经历描述为可怕的事件，但是也有人将此描述为愉快的经历。

The terms alien abduction or abduction phenomenon describe "subjectively real memories of being taken secretly against one's will by apparently nonhuman entities and subjected to complex physical and psychological procedures". Such abductions have sometimes been classified as close encounters of the fourth kind. People claiming to have been abducted are usually called "abductees" or "experiencers".