The Neptune Factor
“The most fantastic undersea odyssey ever filmed.”
We checked 8 streaming services in India on 06 Jun 2026 at 07:10 IST
About
When an underwater ocean lab is lost in a earthquake, an advanced submarine is sent down to find it and encounters terrible danger.
Cast
Ben Gazzara
as Cmdr. Adrian Blake
Walter Pidgeon
as Dr. Samuel Andrews
Ernest Borgnine
as Chief Diver Don MacKay
Yvette Mimieux
as Dr. Leah Jansen
Donnelly Rhodes
as Diver Bob Cousins
Chris Wiggins
as Capt. Williams
Michael J. Reynolds
as Dr. Hal Hamilton
Mark Walker
as Diver Dave Moulton
Leslie Carlson
as Brigs, Triton Radioman
Stuart Gillard
as Diver Phil Bradley
Ed McGibbon
as Dr. Norton Shepherd
David Renton
as Warrant Officer
Joan Gregson
as Dobson
David Yorston
as Diver Stephens
Ken Pogue
as Diver Thomas
Dave Mann
as Hawkes
Frank Perry
as Sub Captain
Kei Fujiwara
as Kay, lab technician
Dan MacDonald
as Lt. Hobbs, Halifax day officer
Richard Whelan
as Radio Officer
Where does The Neptune Factor rank today?
The Neptune Factor is #10000 on the CineFlixo Daily Streaming Charts today.
- Highest: #10000
- Top 10: 0 days
- Top 100: 0 days
Watch The Neptune Factor Online Free in HD
Looking for a place to watch The Neptune Factor online for free? You've landed on the right page. The Neptune Factor is a talked-about Inglés action and science fiction movie from 1973 that you can stream right now on CineFlixo in high quality, no signup required.
About The Neptune Factor
“The most fantastic undersea odyssey ever filmed.”
When an underwater ocean lab is lost in a earthquake, an advanced submarine is sent down to find it and encounters terrible danger. Running 98 minutes.
The Neptune Factor Cast and Characters
The cast features Ben Gazzara (as Cmdr. Adrian Blake), Walter Pidgeon (as Dr. Samuel Andrews), Ernest Borgnine (as Chief Diver Don MacKay), Yvette Mimieux (as Dr. Leah Jansen), and Donnelly Rhodes (as Diver Bob Cousins). Their performances are a major reason The Neptune Factor has built such a passionate audience.
Where to Watch The Neptune Factor Online
CineFlixo lets you stream The Neptune Factor online free, instantly, in HD. There's nothing to install — open the page, hit play, done. Works perfectly on Jio, Airtel, Vi networks across India and on slow mobile data thanks to our adaptive video pipeline.
▶ Watch The Neptune Factor NowWhy People Are Watching The Neptune Factor
The Neptune Factor flies under the radar but it deserves your attention. What makes it work is action sequences that don't feel cheap and world-building that respects the audience's intelligence. If you enjoy Inglés storytelling that doesn't follow the same tired beats, this is the kind of film you'll end up recommending to friends.
Frequently Asked Questions about The Neptune Factor
Where can I watch The Neptune Factor online for free?
You can watch The Neptune Factor online free on CineFlixo. Just open the page and hit play — no signup, no subscription, full HD streaming on phone, tablet, or desktop.
How long is The Neptune Factor?
The Neptune Factor runs for 98 minutes (about 1.6 hours).
Is The Neptune Factor good? What's the rating?
The Neptune Factor holds a 5.0/10 rating based on 52 reviews — a niche pick worth checking out.
Who is in the cast of The Neptune Factor?
The main cast includes Ben Gazzara, Walter Pidgeon, Ernest Borgnine, and Yvette Mimieux, plus a strong supporting ensemble.
Is The Neptune Factor available in Inglés?
Yes — The Neptune Factor was originally produced in Inglés and that's the version you'll stream here on CineFlixo. English subtitles are provided when available.
When was The Neptune Factor released?
The Neptune Factor was released in 1973.
Do I need an account to watch The Neptune Factor on CineFlixo?
No. CineFlixo is free and you can watch The Neptune Factor without creating an account. Sign-up is optional — only useful if you want a personal Watchlist or to comment on episodes.
Similar Movies You Might Like
If you enjoyed The Neptune Factor, check out Double Dragon, Backdraft, Frankenstein, 20,000 Leagues Under the Sea, and A Daughter Of Destiny.
💬 Comments0
Join the conversation
Share your thoughts, rate episodes, and connect with other fans
Hey everyone! 👋 Welcome to the discussion.
Feel free to share your thoughts about this series — what did you love, what surprised you, which episodes are your favorites? 🎬
Got ideas for what we should add to CineFlixo? Want to suggest a series? Drop it here! We read every comment ✨
Similar Movies
Movies like this one
Recommended for You
Based on this movie
Similar English Movies
More action English movies you might enjoy
Explore more
Frequently Asked Questions
Common questions about The Neptune Factor
Where can I watch The Neptune Factor for free?
You can watch The Neptune Factor (1973) online for free on CineFlixo. Just click "Watch Free" on this page to start streaming instantly — no account, subscription, or downloads required.
What is The Neptune Factor about?
The Neptune Factor is a Action/Science Fiction English-language film. When an underwater ocean lab is lost in a earthquake, an advanced submarine is sent down to find it and encounters terrible danger.
When was The Neptune Factor released?
The Neptune Factor was released on June 26, 1973. It has a runtime of 1h 38m. The film was produced by Conquest of the Deeps Limited and Company.
Who stars in The Neptune Factor?
The Neptune Factor stars Ben Gazzara, Walter Pidgeon, Ernest Borgnine and Yvette Mimieux. The full cast list is available in the Cast section above.
Is The Neptune Factor available in HD?
Yes, The Neptune Factor is available to stream in high definition (HD) on CineFlixo. Our players automatically deliver the best quality your connection supports — no extra setup needed.