All
Search
Images
Videos
Shorts
Maps
News
Copilot
More
Shopping
Flights
Travel
Notebook
Report an inappropriate content
Please select one of the options below.
Not Relevant
Offensive
Adult
Child Sexual Abuse
Length
All
Short (less than 5 minutes)
Medium (5-20 minutes)
Long (more than 20 minutes)
Date
All
Past 24 hours
Past week
Past month
Past year
Resolution
All
Lower than 360p
360p or higher
480p or higher
720p or higher
1080p or higher
Source
All
Dailymotion
Vimeo
Metacafe
Hulu
VEVO
Myspace
MTV
CBS
Fox
CNN
MSN
Price
All
Free
Paid
Clear filters
SafeSearch:
Moderate
Strict
Moderate (default)
Off
Filter
24:58
YouTube
WatchMojo.com
Top 20 Alien Documentaries You HAVE to See
Dive into the mysterious world of UFOs and extraterrestrial encounters! We're counting down the most fascinating, mind-bending, and thought-provoking alien documentaries that explore the possibility of life beyond our planet. From government conspiracies to incredible eyewitness accounts, these films will make you question everything you ...
65K views
Mar 11, 2025
Memory: The Origins of Alien Alien Movie Franchise
1:22
Memory: The Origins of Alien - Official Trailer
YouTube
Madman Films
189.5K views
Aug 30, 2019
1:22
Memory: The Origins of Alien - Official Trailer
YouTube
Screen Media Films
363.6K views
Aug 27, 2019
1:30
Memory: The Origins of Alien Trailer #1 (2019) | Movieclips Indie
YouTube
Rotten Tomatoes Indie
38.9K views
Aug 29, 2019
Top videos
1:17:27
Unearthly Encounters | ALIEN ABDUCTION: THE STRANGEST UFO CASE FILES | Beyond Belief
YouTube
FilmIsNow Movies
1.2M views
May 26, 2024
2:52:45
UFO Witness: The Greatest Alien Moments! | UFO Witness S2 E5, E6, E7, E8 | Discovery Channel
YouTube
DiscoveryChannelInd
52.4K views
5 months ago
2:16
The Alien Perspective - Official Trailer (2025) Documentary
YouTube
IGN Movie Trailers
153.8K views
Dec 20, 2024
Memory: The Origins of Alien Memory Documentary Review
1:08
Alien and It! The Terror From Beyond Space comparisons (Memory: The Origins of Alien documentary) | Alien_Theory
Facebook
Alien_Theory
20.3K views
4 months ago
1:23
“A fascinating deep dive into a sci-fi, horror classic” - The Playlist Memory: The Origins of Alien now in theater and on-demand! | Screen Media
Facebook
Screen Media
152.1K views
Oct 5, 2019
1:22
Alien’s influence from the world of insects (Memory: The Origins of Alien documentary) | Alien_Theory
Facebook
Alien_Theory
2.6K views
1 month ago
1:17:27
Find in video from 01:20
The Alien Abduction
Unearthly Encounters | ALIEN ABDUCTION: THE STRANGEST U
…
1.2M views
May 26, 2024
YouTube
FilmIsNow Movies
2:52:45
UFO Witness: The Greatest Alien Moments! | UFO Witness S2 E5, E
…
52.4K views
5 months ago
YouTube
DiscoveryChannelInd
2:16
The Alien Perspective - Official Trailer (2025) Documentary
153.8K views
Dec 20, 2024
YouTube
IGN Movie Trailers
43:43
Secrets of the UFOs | Full Documentary | 7NEWS Spotlight
4.5M views
Dec 9, 2021
YouTube
7 News Spotlight
1:31:57
Inside the UFO Phenomenon | Disclosure Files | Full HD Feature
…
984 views
2 months ago
YouTube
We Got Movies
1:18:48
The UFO Phenomenon | Full Documentary 2021 | 7NEWS Spotli
…
16.8M views
Sep 6, 2021
YouTube
7 News Spotlight
1:10:11
Exploring the Unknown | Alien Life Forms | Full Sci-Fi Documentary |
…
2.9K views
7 months ago
YouTube
V Movies
12:21
Top 10 Best Alien Documentaries
917.2K views
Jan 1, 2020
YouTube
WatchMojo.com
24:58
Top 20 Alien Documentaries You HAVE to See
Mar 11, 2025
MSN
Dailymotion
1:01:59
Find in video from 09:05
Gray Aliens
Alien Secrets Unveiled | The Greys Order: Agenda Exposed | Sci-Fi D
…
410.7K views
Dec 30, 2022
YouTube
V Movies
1:47
Investigation Alien | Official Trailer | Netflix
1.7M views
Oct 11, 2024
YouTube
Netflix
2:16
The Alien Perspective - Official Trailer
90.3K views
Jan 2, 2025
YouTube
IGN
1:46
ALIEN UNCOVERED: ORIGINS Trailer (2023) Area 51 UFO Conspi
…
17.9K views
May 4, 2023
YouTube
FilmIsNow Movies
1:04:06
2025’s Biggest Alien Discoveries (Part 2) | Ancient Aliens
892.8K views
3 months ago
YouTube
HISTORY
2:08
The X-Files Meets Real Life In Trailer For James Fox’s New UFO Docum
…
1.2M views
Sep 30, 2024
YouTube
Screen Rant Plus
2:25
The Manhattan Alien Abduction | Official Trailer | Netflix
852.7K views
Sep 25, 2024
YouTube
Netflix
1:01:28
Ancient Mysteries | Ancient Aliens: Origin of Humanity | Full Sci-Fi Do
…
6.5K views
4 months ago
YouTube
V Movies
43:11
Find in video from 01:37
Government Approach to UFOs
ALIEN CHRONICLES (S1E4) - BRUCE MACCABEE - ALIEN AND
…
541.3K views
May 24, 2022
YouTube
Extreme Mysteries
59:24
Unveiling the Truth | Mass Sightings: The Final Proof | Full S
…
6K views
8 months ago
YouTube
V Movies
1:08:28
Alien Mysteries | Abducted Humans on Alien Planets | Full Sci-Fi Movi
…
2.3K views
3 months ago
YouTube
V Movies
3:25
Alien Abduction | No One Will Save You | Hulu
70.7K views
Dec 13, 2023
YouTube
Hulu
0:45
First Contact: An Alien Encounter | Trailer | BBC Studios
8.3K views
Dec 23, 2022
YouTube
BBC Studios
2:37
Find in video from 01:33
The Alien's Plan
Alien: Covenant | Official Trailer [
…
32.8M views
Mar 1, 2017
YouTube
Alien Anthology
42:15
The Global Threat (Full Episode) | UFOs: Investigating the Unknown
6.7M views
Feb 24, 2024
YouTube
National Geographic
1:03
Alien: Romulus | Teaser Trailer
22.1M views
Mar 20, 2024
YouTube
20th Century Studios
59:10
Find in video from 00:12
Introduction to Alien Abductions
Abducted By ALIENS (UFO Encounters of the 4th Kind) | Full HD
1.4M views
Oct 23, 2021
YouTube
Extreme Mysteries
29:04
ALIEN CHRONICLES (S1E11) - TRAVIS WALTON - ALIEN AND UF
…
217.1K views
Jul 26, 2022
YouTube
Extreme Mysteries
1:01:51
Exposing Government Secrets! | ALIEN AND UFO ENCOUNTERS: T
…
393.8K views
Apr 28, 2024
YouTube
FilmIsNow Movies
1:01:25
Find in video from 04:46
Ronald Reagan's Fascination with UFOs
ALIEN - PRESIDENT CONNECTION | Alien Chronicles: Alien UFO Enco
…
847.9K views
Aug 13, 2022
YouTube
Extreme Mysteries
See more videos
More like this
Feedback
