Jenny Agutter supplied more top-quality nudity in An American Werewolf In London. That tape, long with The Boob Tube and Kentucky Fried Movie got a bit of wear.
When I was a kid, my folks took us to a drive-in and we saw the movie “Joe”. Og help me, the first person I saw nude in a film may have been Peter Boyle. This explains so much.
It was the second Dirty Harry movie, called **Magnum Force **if I remember right.
I’m sure whoever it was, my parents made me forget 
Yeah sorry, I just can’t remember. The first one I do remember seeing was the hilarious nude scene in American Pie. I’m sure it wasn’t my first nude scene though.
Natasha Henstridge in Species. Honorable mention goes to True Lies, which came out about a year earlier. The scene with Jamie Lee Curtis stripping was the first time I really got aroused.
I think it was The First Nudie Musical. I might have seen glimpses of nudity on the screen before that but it didn’t really register as sexual. What really stands out for me was the sheer variety and quantity of nudity and just plain naughtieness and campyness of that movie at the time. It was also something I knew I shouldn’t be watching, It was playing as second run on one of the cable channels in the very early eighties.
Stripes. “Oh, God, I wish I was a Loofa!” I must have played that scene over and over on the Laserdisc at least 50 times whenever my parents were out of the house.
I saw Frenzy when it was released. With my parents. Saw boobies, no big deal.
The Steve McQueen movie Papillon. When he escapes from the camp and ends up in a South American “Indian” village where the women are topless and he finds a girlfriend. This for some reason I never did understand was shown uncut on network TV in the mid 70’s. At 12 years old it was a delightful surprise.
Slapshot.
HBO
Mom in the room with me and all of my brothers.
Woman sits up in bed, her boobs come bouncing out, and no one said a word. Or turned their head. Until the hockey game starts back up.
JoBeth Williams in Kramer vs Kramer. I was like 8 and seeing the movie with my mom but it is definately etched in my memory.
The Harrad Experiment. HBO. I was 9 years old. BTW, Don Johnson was in that.
Melanie Griffith is listed as an extra
The first time nudity seemed to matter to me was the movie Embryo where the girl twirls naked before the mirror. My father actually asked me to close my eyes. It was still HBO.
I’m sure I remember them as nuder than they actually were, but…
There was a scene in Billy Jack where our hero interrupts the loser bad guy making out or skinny dipping or something with a voluptuous babe. As she scrambles to get her clothes together, she says “You’re not gonna look, are you?” To this, our hero replies “Probably.”
A few years later, Barbara Bach in a submarine shower scene in The Spy Who Loved Me.
Blowup - 1966…Sure Vanessa Redgrave was attractive, but the two teenagers - ya saw cute little boobies and pubic hair…wow! (well, at the time it was a “wow!” I had wet dreams for a week - OK, OK, it was more like 27 years).
I can assure you, there’s no “real” nudity there. Trust me, I’ve looked.
The movie H.O.T.S
1968, Planet of the Apes – Charlton Heston’s bare butt. I think that was the first on-screen nudity both Pepper Mill and I saw (although we didn’t know each other at the time).
I’m not sure what the first female nudity I saw was, but the first I can recall was The Hawaiians, the second movie to be based on James Michener’s novel Hawaii. There’s a scene where Charlton Heston (again!) gets into a Japanese bath with a lot of Japanese ladies. There was some very gratuitous female nudity.
I recall a female comedian say that the movie’s GP rating* stood for "Get Popcorn, which is what she told her 13 year old son to do at that point.
*The second tier rating, above G for “General” audiences, was originally M for “Mature”. But they changed it, maybe because they thought too many people would be frightened off, thinking it meant Dirty <Movies. But they changed it to GP, which wasn’t obvious in its meaning. Apparently a lot of people thought it meant “General Patronage”, so they changed it again to PG for “Parental Guidance”, which is how it still is.
Either Zeffirelli’s Romeo and Juliet in 1968 or Rosemary’s Baby in the same year. Can’t remember which I saw first.
…and no one in either movie was all that nude anyway, were they?
“Animal House,” when Bluto is on the ladder.
Although, a few years earlier, my eyes nearly popped out of my head when the late, lovely Brenda Benet oozed out of the back room of the Lucky Spot tavern in “Walking Tall,” and you could see right thru her outfit–on network TV!
And, not nude, but still a great scene for us teens in that era: The “car wash” scene in “Cool Hand Luke.”
I’m not sure, but the first one I remember (and hardly the first) was a weird short subject called “The Bed” that I saw as a college freshman.