Continuity mistake: At the very start we see the farmer's daughter hanging a sheet out on the washing line. In one shot the sheet is crumpled with no peg on it and in the next shot it's not crumpled and pegged to the line. (00:02:10)
Factual error: In the opening scenes by the farmhouse, the fields in the distance have "tramlines" - used for accuracy when crop spraying. The scene is set in 1941 however tramlines didn't come into use until the 1950s. (00:02:20)
Continuity mistake: As Landa and his men approach the farmer's house, they pass the same trees on the dirt road several times. (00:02:30 - 00:03:15)
Other mistake: At the very beginning, the first cut to Mr Lapadite he has an axe in his hand, ready to strike (and we heard two strike sounds before), but there is no log to cut. (00:03:17)
Suggested correction: He is cutting the stump. We see him actively cut it too, not only ready to strike.
Continuity mistake: The German Feldwebel, who gets beaten to death with a baseball bat, has a badge over his left breast pocket which disappears and reappears during shots. (00:31:30)
Revealing mistake: In the scene where the Bear Jew beats the German Sergeant to death with a baseball bat, the sergeant's head basically explodes into a mass of blood at the end of the beating. In a later shot, the sergeant's body is shown lying on the ground with the head intact. (00:33:10)
Continuity mistake: In the scene in which Colonel Landa and Shosanna are talking in the cafe, Landa orders an espresso for himself, along with a glass of milk for Shosanna and two strudels. When the order arrives on a tray, the cup of espresso is seen briefly in one shot. The film then cuts to a close-up of the tray, and the espresso has disappeared, despite no-one having put it down. In the next shot of the table, the espresso has appeared beside Landa. (00:50:05)
Continuity mistake: In the scene where Col. Landa hands himself over to Lt. Raine, Utivich cuffs Col. Landa. Then when Lt. Raine is carving the swastika into Col. Landa's forehead, you can see him clutching at grass with his right hand, which isn't cuffed. (01:09:20 - 01:11:40)
Suggested correction: There is a clear time gap between Aldo threatening Landa with the knife and Aldo carving the swastika into Landa's forehead. It is entirely possible that his handcuffs were removed between the two scenes.
Continuity mistake: When Hans Landa first approaches Bridget von Hammersmark in the theater, he is shown to be walking right up to her, as evidenced by the shot of his right foot being shown to be mere inches away from her left leg. When the shot changes to a medium shot of von Hammersmark saying "Colonel Landa, it's been years," Landa is suddenly out of shot, whereas the proximity of his feet to von Hammersmark's suggests he should have been visible in the medium shot. (01:51:10)
Factual error: When the real German soldiers are playing 20 questions in the bar, one of the cards shows the name of Genghis Khan. This is an English-language word; as Germans, they would have written Dschingis Khan instead. As the whole scene deals with exposing the British/American spies and subtle differences in their language or behaviour, this is especially unfavorable here.
Continuity mistake: In the scene where they are playing 20 questions, the barmaid and the barman are invited to join in, in the next shot they are back behind the bar and then a few moments later they are playing 20 questions again.
Factual error: Near the end, when Lt. Raine is being interrogated by Col. Landa, there is a phone on the table with a coiled phone cord. Coiled phone cords were not used until the late 1950s.
Continuity mistake: In the final scene between Brad Pitt and the Nazi officer before he carves the swastika into the German's forehead, Pitts' tie changes three times. First scene it is on both sides of his neck. Second scene it has disappeared from the right side, and the third scene, it is back completely around his neck again.
Continuity mistake: Shosanna is dropping the letters onto the ground while talking to Zoller. In the last two or three high angle shots before she descends the ladder, they're suddenly positioned differently from how they were before.
Character mistake: Hicox salutes General Fenech, who returns the salute. But Fenech is bareheaded and therefore under British military protocol cannot salute. He would instead acknowledge the salute with a nod.
Continuity mistake: When Colonel Hans Landa is talking to the dairy farmer at the start of the movie, the glass he drinks his milk from changes position from shot to shot.
Continuity mistake: When Bridget von Hammersmark is in the pub, and the SS Officers are offering them a 33-year-old whiskey, you can see that the beer foam in the glass on the table is changing between the shots.
Factual error: During his briefing for Operation Kino, Lt. Hicox quips "Paris when it sizzles", which was not a thing in WWII; it is the title of a 1964 film, itself taken from the 1953 Cole Porter song "I Love Paris."
Continuity mistake: In the Operation Kino briefing scene, in the shot where General Fenech and Lt. Hicox drink to "down with Hitler", Fenech is holding his staff in his left hand along with his blue file folder. In the next shot, as Fenech asks Hicox if he is familiar with German cinema under the Third Reich, the staff is suddenly no longer in his hand, but being held pinned under his left arm. In the following shot, Fenech is instantaneously once again holding both the folder and staff in his left hand.
Factual error: During the baseball bat beating scene, the "hitter" says something about Teddy Ballgame going yard. "Going yard" is more like a 1990s term, not one used way back in 1941.
