Documentary subreddits
We found 20 active documentary subreddits: communities with at least one new post a day on average in September 2026, ranked by members. The largest is r/Documentaries with 20.4M members. The busiest is r/thegrandtour, with 621 posts last month. In 1 of the 9 we could measure, a brand-new account's post usually stays up: they remove 17% or fewer of posts from accounts under a week old.
Data for 20 communitiesDownload CSV
- r/Documentaries20.4M members
- r/thegrandtour621 posts in September 2026
- r/crimedocumentaries+314% members in 12 months
- r/ForensicFiles10% of new-account posts removed
All active documentary subreddits, by members
| # | Subreddit | Members | Posts / month | Member growth, 12 mo | Median author age | Women | Posts with a reply | New-account posts removed | Links |
|---|---|---|---|---|---|---|---|---|---|
| 1 | r/Documentaries↗tl;dw /r/Documentaries is reddit's main subreddit for documentaries. Please read our community rules. | 20.4M | 490 | 0% | 30 | 20% | 100% | Min. age/karma | Yes |
| 2 | r/mealtimevideos↗You know when you sit down for a meal in front of the computer and you just need something new to watch for a bit while you eat? If you search /r/videos or other places, you'll find mostly short video | 1.99M | 301 | +1% | 29 | 16% | 97% | Min. age/karma | Yes |
| 3 | r/thegrandtour↗This is a subreddit about "The Grand Tour", Amazon's car show formerly hosted by Jeremy Clarkson, Richard Hammond and James May. New series hosted by Francis Bourgeois, James Engelsman and Thomas Holl | 645K | 621 | +3% | 30 | 11% | 93% | Min. age/karma | Yes |
| 4 | r/ClarksonsFarm↗Welcome to Clarkson's Farm subreddit. Season 5 is out now! Discuss episodes, news, the cast, Diddly Squat Farm, real-world farming, and everything happening in the Cotswolds. | 120K | 59 | +20% | 35 | 19% | 82% | 24% | Yes |
| 5 | r/NetflixDocumentaries↗A place to share favorite documentaries that can be found on Netflix (or other streaming services) so that the rest of us obsessed with documentaries can enjoy. Further, it is a place to discuss docum | 105K | 122 | +145% | 38 | 79% | 86% | 61% | Yes |
| 6 | r/MakingaMurderer↗The main subreddit for discussion surrounding the Netflix docuseries Making a Murderer and the Steven Avery and Brendan Dassey cases. | 87K | 32 | +2% | 31 | 35% | – | – | Yes |
| 7 | r/aircrashinvestigation↗For people who are interested in the Canadian TV series, Air Crash Investigation(Everywhere else)/Mayday(Canada)/Air Disasters(US), similar shows, and aviation incidents/accidents in general. | 62K | 158 | +10% | 32 | 32% | 85% | 19% | Yes |
| 8 | r/crimedocumentaries↗Anything from kidnapping to serial killers. See the dark side of humanity as real life villains prey on the people around them. | 60K | 340 | +314% | 39 | 60% | 40% | – | Yes |
| 9 | r/ForensicFiles↗new-account friendlyWelcome to r/ForensicFiles, where crime-solving meets everyday objects! Watch as lint, carpet fibers, and grocery receipts take down clueless criminals who somehow didn’t know DNA was a thing. Whether | 53K | 112 | +16% | 36 | 69% | 84% | 10% | Yes |
| 10 | r/WarMovies↗The place for films, tv series, and documentaries about war | 39K | 156 | +247% | 39 | 7% | 63% | – | Yes |
| 11 | r/AdamCurtis↗Adam Curtis is a British documentary film-maker his works explore areas of sociology, psychology, philosophy, politics and political history. Here are a few documentaries he has made: Pandora's Box, T | 31K | 50 | +41% | 38 | 13% | 72% | – | Yes |
| 12 | r/DocumentaryReviews↗It's hard to know what documentaries are best and most accurate ones to watch. You can come here and we'll help you figure that out. | 27K | 52 | – | 44 | 57% | 41% | – | No |
| 13 | r/HarryandMeghanNetflix↗Anti-monarchist community that supports Prince Harry & Meghan Sussex’s business & humanitarian efforts. We also discuss media literacy and manipulation, colonialism, sexism/misogyny, racism, mental h | 25K | 65 | +14% | 40 | 90% | 90% | Min. age/karma | Yes |
| 14 | r/LeavingNeverlandHBO↗Community for discussion of the HBO documentary Leaving Neverland and related topics. Please keep debate/commentary respectful and be mindful that this is a community in support of James, Wade and all | 22K | 210 | +46% | 32 | 63% | 78% | 45% | Yes |
| 15 | r/documentaryfilmmaking↗Community to talk about making documentaries, tips for filmmakers, topics, brainstorming etc... | 19K | 186 | +62% | 35 | 25% | 44% | 24% | Yes |
| 16 | r/HowToWithJohnWilson↗A subreddit for HBO's How To With John Wilson. | 19K | 56 | +18% | 33 | 25% | – | – | Yes |
| 17 | r/hellier↗A place to discuss the series 'Hellier', other projects by Planet Weird, and related topics with emphasis on the paranormal and unexplained. | 13K | 40 | +12% | 37 | 45% | – | – | Yes |
| 18 | r/lastchanceU↗Join the discussion of the Netflix Documentary Series Last Chance U | 13K | 32 | +8% | 29 | 14% | – | – | Yes |
| 19 | r/beyondthemapsedge↗Netflix's Gold and Greed, Justin Posey's new treasure hunt begins.... | 6.9K | 91 | +32% | 38 | 32% | 68% | 33% | Yes |
| 20 | r/walkingwithdinosaurs↗anything related to the walking with perhistoric life series or anything similar. | 5.4K | 53 | +36% | 26 | 16% | 76% | – | Yes |
Looking for a ranking by size and growth? Top documentary subreddits by tier.
How this list is built
Subreddits are grouped into topics by what their posts are about; this list holds the documentary group. We include subreddits that are safe for work and had at least 30 new posts in September 2026, about one a day.
Members is Reddit's subscriber count; growth compares it with a year earlier. Posts with a reply is the share of posts that got at least one comment over the last three months. Median author age and women are estimated from what authors say about themselves, and shown only when enough of them did. New-account posts removed is the share of posts from accounts younger than 7 days that were removed; communities at or below 17% are marked new-account friendly. Min. age/karma means the subreddit asks for a minimum account age or karma before you can post.
The list is rebuilt every month from public Reddit posts and comments. Data and CSV are free to reuse under CC BY 4.0 with a link to this page.
Documentary subreddits: common questions
What is the biggest documentary subreddit?
r/Documentaries, with 20.4M members in September 2026. Next are r/mealtimevideos (1.99M) and r/thegrandtour (645K).
Which documentary subreddits are the most active?
By posts in September 2026: r/thegrandtour (621 posts), r/Documentaries (490 posts) and r/crimedocumentaries (340 posts).
Which documentary subreddits can a new account post in?
r/ForensicFiles (10% of new-account posts removed). They ask for no minimum karma or account age, and most posts from accounts under a week old stay up.
How often is this list updated?
Every month, when we rebuild our subreddit data. This version uses data for September 2026. Member counts come from Reddit; activity, removals and who writes come from public Reddit posts and comments.
Find the subreddits that fit your post
This list is the same for everyone. Find Subs narrows it to communities your account can post in, where your audience writes, and tells you when to post.