Documentary on HBO Max: the best movies
9 documentary films available on HBO Max today, ranked by audience rating, most recommended first. Updated 25 September 2026
Robin Williams: Come Inside My Mind leads with 7.9 out of 10, ahead of Friends: The Reunion (7.8). Ratings range from 6.5 to 7.9. All were released between 2016 and 2022. The selection leans towards films from the 2010s, 6 of 9.
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Robin Williams: Come Inside My Mind
A funny, intimate and heartbreaking portrait of one of the world’s most beloved and inventive comedians, Robin Williams, told largely through his own words. Celebrates what he brought to comedy and to the culture at large, from the wild days of late-1970s L.A. to his death in 2014.
Friends: The Reunion
The cast of Friends reunites for a once-in-a-lifetime celebration of the hit series, an unforgettable evening filled with iconic memories, uncontrollable laughter, happy tears, and special guests.
Spielberg
A documentary on the life and career of one of the most influential film directors of all time, Steven Spielberg.
Mommy Dead and Dearest
Child abuse, mental illness, and forbidden love converge in this mystery involving a mother and daughter who were thought to be living a fairy tale life that turned out to be a living nightmare.
Harry Potter 20th Anniversary: Return to Hogwarts
An enchanting making-of story told through all-new in-depth interviews and cast conversations, inviting fans on a magical first-person journey through one of the most beloved film franchises of all time.
Game of Thrones: The Last Watch
For a year, acclaimed British filmmaker Jeanie Finlay was embedded on the set of the hit HBO series “Game of Thrones,” chronicling the creation of the show’s most ambitious and complicated season. Debuting one week after the series 8 finale, GAME OF THRONES: THE LAST WATCH delves deep into the mud and blood to reveal the tears and triumphs involved in the challenge of bringing the fantasy world of Westeros to life in the very real studios, fields and car-parks of Northern Ireland. Made with unprecedented access, GAME OF THRONES: THE LAST WATCH is an up-close and personal portrait from the trenches of production, following the crew and the cast as they contend with extreme weather, punishing deadlines and an ever-excited fandom hungry for spoilers. Much more than a “making of” documentary, this is a funny, heartbreaking story, told with wit and intimacy, about the bittersweet pleasures of what it means to create a world – and then have to say goodbye to it.
The Inventor: Out for Blood in Silicon Valley
With a magical new invention that promised to revolutionize blood testing, Elizabeth Holmes became the world’s youngest self-made billionaire, heralded as the next Steve Jobs. Then, overnight, her 10-billion-dollar company dissolved. The rise and fall of Theranos is a window into the psychology of fraud.
Class Action Park
Class Action Park explores the legend, legacy, and truth behind the 1980s water park in Vernon, New Jersey that long ago entered the realm of myth. Known for its dangerous, unsupervised rides and lack of regulation, guests of Action Park expected to walk away with injuries and were lucky if they made it out alive. Shirking the trappings of nostalgia, the film uses investigative journalism, original animations, recordings, and interviews with the people who lived it to reveal the true story of Action Park.
Beware the Slenderman
In this horrifyingly modern fairytale lurks an online Boogeyman and two 12-year-old girls who would kill for him. The entrance to the internet quickly leads to its darkest basement. How responsible are our children for what they find there?
What to know before choosing
A well-rated documentary is not necessarily a fair one: audiences rate what turned them upside down, and the genre rewards reversals more than patient reporting. Ratings here are among the highest in the catalogue and vote counts among the lowest — which is why the vote floor is lowered for this genre, or the page would be empty. Check the date: a current-affairs documentary ages in three years.
HBO Max carries two catalogues with nothing in common: the Warner library, very wide and very old, and the in-house productions, few and much noticed. A by-genre list almost always leans to the Warner side, which gives an unusually spread-out distribution across decades. It is one of the rare catalogues where looking for a 1970s film genuinely makes sense.
See also
- HBO Max
- Documentary
- Documentary on Netflix
- Documentary on Prime Video
- Documentary on Disney+
- Documentary on Apple TV+
- Action
- Adventure
- Animation
- Comedy
- Crime
- Drama
- Family
- Fantasy
- Biopic
- Horror
- Musical
- Romance
- Sci-fi
- Thriller
- War
- Western
How this list is built
Films come from the TMDB catalogue, filtered on audience rating and vote count, then cross-checked against real availability in the country. No paid placement, no partnerships. How we choose the films.
Film data and posters: TMDB. This app uses the TMDB API but is not endorsed or certified by TMDB.