12 Angry Men (the original), The Dresser (both movie versions are great, the 2015 is a big production though), The Hateful Eight (technically two locations I guess, because first part is inside a stagecoach, then they reach the cabin the whole movie takes place), Moon (most of the movie takes place inside a moon station, but there are a few scenes he goes outside, so maybe doesn't count?), the first version of The Front Page (1931) takes place almost entirely inside the police department press room (if not entirely, I don't remember anymore)

Clue?

The Man From Earth was a great movie. Hopefully it qualifies, even though there are a few parts outside the cabin. Based on a play of the same name. It's also one of those movies where you can't recapture the first watch. Those who have seen it understand. I've heard the sequel wasn't nearly as good, and I'd figure as much, some stories just need to have their conclusion and let it sit with the viewer.

Phone Booth. The entire movie takes place in a phone booth.

The Lighthouse and The Man From Earth come to mind. Probably even Reservoir Dogs.

I was about to say Clerks but they do go to a funeral for a minute. Like 95% one place.

Saw was mostly filmed in one room. Bloody good film, the first one.

Four Rooms takes place in one hotel, during one night.

https://www.themoviedb.org/movie/5-four-rooms

Phonebooth (2002)
Locke (2013)
Kimi (2022)

Rec, pontypool

Since the best two were taken ( cube and saw) I guess I'll go with Dredd, although it's not entirely one location

Evil Dead 1/2

Climax. It's a French movie where a bunch of music video dancers drink LSD-spiked punch and get totally wrecked. It's also a one-cut movie.

The classic answer: "El ángel exterminador"

The Raid (2012)

There are some sci fi movies like Passengers or Pandorum that are set on one space craft. Or various other movies like Titanic or Snowpiercer or Murder on the Orient Express...

Whale

I quite liked Buried. It takes place in a coffin. I haven't seen it in a long time so there may be a scene or two outside the coffin setting up the situation and at one point I think Ryan Reynolds watches a video of somewhere else outside the coffin.

Might be cheating slightly with this one, but the 2021 movie "Mass" mostly takes place in one room, except for the opening and the ending of the film.

It is two couples meeting up in a humble meeting room at a church to talk about something incredilby traumatic, that happened to all four of them.

I recommend going into this movie blind. It is a painfully devastating drama that will leave you completely exhausted emotionally. At the same time, it shines a light on a very relevant and important issue. The acting and writing is great. The subject matter is handled with a lot of empathy and it saddens me that not more people have seen it and talked about it.

Fair warning, though: if you are at all easy to tears, you are going to ugly-cry throughout this movie.

Was also gonna mention Who's Afraid of Virginia Wolf, but I actually dont remember if they do stay in one location most of the movie or not. I think they do. It's another film with two couples hanging out and talking. In this case, the older couple end uo having a massivr fight while the younger couple is trapped in the middle of it. Fucking intense movie and even though it's from the 60s, you kinda forget all about that while watching. In my memory, it felt very fresh and relevant. It also has Elizabeth Taylor and Richard Burton in the roles as the older couple, so you know shit is going to go down.

Also, The Invitation from 2015! A psychological horror/thriller about a group of friends meeting up after basically losing contact due to a tragic event. Most of the movie takes place in and around one house, during one evening while the main character seems to be the only one noticing that something is messed up about this dinner party. It's a mostly forgotten, but very solid film in my opinion.

The Outfit (2022)

Massively under-appreciated movie that I would highly recommend. Mark Rylance is absolutely superb in it.

Would Oscar (1991) count? Most of the time, technically, they are in the same "location" (a mansion), but switching rooms.

I recently watched Iron Lung (2026) and really enjoyed it. Certainlynot the best of single set movies but I thought it was pretty well done.

Cube

My Dinner With Andre

Silent Running