Well, Michelangelo Antonioni’s Blow Up (1966) is a masterpiece, and influenced The Conversation (which is tremendous, obviously, and on your list) and Blow Out (1981), an homage from Brian DePalma that is uneven but worth seeing.
Black Sunday (not the 1960 horror movie) got mixed reviews when it came out in 1977, but few directors in Hollywood history knew their way around a paranoid thriller the way John Frankenheimer did. It’s aged fairly well, and the terrorism plot for mass destruction that was considered far fetched 40 years ago is sadly very au courant now. Early screenplay/book adaptation by Thomas “Silence of the Lambs” Harris.
Speaking of Frankenheimer, there is no greater paranoid thriller in Hollywood history than the original Manchurian Candidate. It’s earlier than '77, but if you’ve not seen it, you just gotta.
Marathon Man is the great movie about Nazi survivors in the new world and you rightly have it on your list, but Boys From Brazil has a nice cast (Gregory Peck, Laurence Olivier, and James Mason) and scratches the same itch. Screenplay by Ira Levin (Rosemary’s Baby), directed by Franklin Schaffner, he of Patton and Planet of the Apes fame.
And if you can’t get enough 1970s movies about Nazi paranoia, The Odessa File with Jon Voight is a solid pick.
Finally, it’s way after your timeline but Ronin from 1998 feels a lot like an aging Frankenheimer trying to capture the same spirit as Day of the Jackal and those kinetic 1970s thrillers.
You got the best ones but Klute (1971), Winter Kills (1979), The Odessa File (1974), Twilight’s Last Gleaming (1977), and Executive Action (1973) are worth seeking out to various degrees.
And if we’re playing fast and loose with genre definitions: Marathon Man (1976) and Night Moves (1975),
I wanted to add something here but you guys have covered all my bases. Nevertheless, this is a great list of movies to work watch (or watch again, as is the case with many of them).
One of my favorite scenes from Three Days of the Condor (pretty sure it’s from that movie) is where Robert Redford kidnaps Faye Dunaway. He’s got her tied up and gagged in the bathroom. He takes off her gag while explaining to her that he had to grab her for her safety. She’s boiling mad, however, and will have none of it. She’s flustered and can’t get words out but finally she blurts out the worst thing that 70’s movie can say: “You… you… you… CREEP!”
The fact that it’s such a build-up to a relatively benign insult never fails to crack me up. I think it encapsuates movies in the 70’s so well.
my favorite scene in Condor is when Redford goes out to buy some coffee and when he is back all collegues are shot dead… I am totally prepared for this situation whenever it will happen in real life.
1978’s Invasion of the Body Snatchers leans more on sci-fi than other titles in this list, but I think it’s a quintessential paranoia movie. Leonard Nimoy, Donald Sutherland, Brooke Adams, and Jeff Goldblum wrapped up in new age psychotherapy, conformity, and government oppression.
I think what I love about those movies is, that in order to create paranoia in the viewer, they are very conscious about using sound, editing and often a lack of music… maybe that was a thing in the 70s, but if I recall some of the above movies, I think they had set pieces, montages without music… I remember the Paris scene in Marathon Man, Day of the Jackal had a long sequence at the end (the assasination), where they only used sounds that happened to be there…
Also the Conversation was all about incidental sounds…
This bleeds into the 80’s, but Prince of the City from 1981 certainly qualifies as a paranoid crime thriller.
Also check out The Offence…Brit crime thriller with Sean Connery and Trevor Howard, directed by Sidney Lumet. Not exactly a “paranoid thriller”, but the main characters is certainly paranoid. Anyhow, I just saw it recently and liked it a lot and it kind of fits. Plus it’s topical with current events as the plot centers on police brutality.