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The Best Alien Documentary Series

List Rules
Vote up the best television documentaries and documentary-reality shows about aliens and UFOs.

The best documentaries about aliens are here to remind you that the truth is out there. The best alien and UFO documentary series ever shown on television offers enough evidence to suspend the disbelief of even the most skeptical audience. If you’ve been looking for the best alien documentaries to add some excitement to your TV nights, this list of the best alien and UFO documentary series of all time will help you figure out what needs to go into your queue.

Whether you’re a believer or not, alien documentary series are a great source of out-of-this-world stories. From the mysteries of history in Ancient Aliens to recent government secrets in UFOs Declassified, UFO and alien documentary shows examine the possibilities of life beyond Earth, mixing reenactment, file footage, and information from experts in the field.

Which shows do the best job sharing information about the possibility of extraterrestrial life? Vote up the best alien documentary shows and add any documentary series about aliens and UFOs that are missing. And if you love the extraterrestrial, be sure to check out these great alien tv shows.