Factual error: When the camera took a shot on a train coming to a station in Czechoslovakia, you can see electric cables above the train tracks. There was no such thing in Czechoslovakia as electrified trains in the 1940's. The electrification started in the 1950's.
Factual error: In the beginning, when the Germans are setting up the tables to record the names, one German puts down a plastic stamp pad. Stamp pads of that era were metal.
Other mistake: Schindler is having the glass door of his office lettered. The style and size of how it is done changes during the scene.
Factual error: In the opening scenes at the nightclub when Oscar is treating his new friends to dinner, they are singing "The Happy Wanderer" ("Der Fröhliche Wanderer"). This song was written by Friedrich-Wilhelm Moller shortly after WWII. The nightclub scene was supposed to have taken place in 1939.
Revealing mistake: In the scene where the women are laying in their bunks in the work camp and one lady is describing what she heard about the horrors of other concentration camps, at the end one woman puts up her hands to her face. You can see her fingernails are neatly manicured, something you'd think wouldn't be possible in a forced labor camp.
Continuity mistake: When the Germans invade the Ghetto, one Jew pretends to be working for the Germans by picking up the luggage. He drops one suitcase right next to his foot when he salutes to the Germans. After the next shot which shows the Germans laughing, the suitcase is much further away from his foot.
Visible crew/equipment: When Schindler and Goeth are having a conversation in Goeth's villa, and Goeth says that he knows that Schindler wants his own sub-camp, you can see the shadow of the camera on Schindler's right arm.
Factual error: When the train containing the women leaves Krakow-Plaszow and is mistakenly rerouted to Auschwitz (roughly 25 miles west of Krakow), the train is shown passing a mountain range. There are no mountains between Krakow and Auschwitz/Oswiecim.
Factual error: During the liquidation of the ghetto, many German soldiers shout and beat the Jews out of their homes but one of the soldiers salutes a little child saying "Wie heisst du?" (What's your name/what are you called?). However the subtitles from the Deluxe Edition DVD read "hiesst" instead of "heisst" (which is not even the preterit/past form, which would be hieß/hiess).
Continuity mistake: In a courtyard of a concentration camp, a fully-clothed Jewish man wearing an armband steps into a long line in front of a table. The camera shows a quick shot of something else, then comes right back to that same man. Now he is missing his armband.
Revealing mistake: In the scene where the woman engineer is executed by Goeth's henchman, watch closely. First, her hair goes from being clear of her forehead, before she is thrown on the ground, to hanging in a fringe, so as to conceal the makeup appliance that replicates her being shot. Then, when she falls, a tube can be seen attached to her leg from an appliance on the ground.
Continuity mistake: Amon Goeth pulls out a German Luger to shoot the rabbi. The Luger jams so Goeth pulls out another pistol and pulls the slide back indicating a semi-auto handgun. The second also fails. Goeth gets frustrated and throws the gun on the ground. When the other Nazi picks it up, it's magically a revolver.
Audio problem: When the head of the Nazi forced labor camp is on his balcony shooting workers that aren't working, he fires two shots, kills two workers then reloads for a third shot but doesn't shoot. When he goes back inside, he ejects the live round he chambered onto his girlfriend, but when the round hits the floor, it clanks like an empty shell.
Factual error: There is a scene in which blues singer Billie Holiday is heard singing (presumably on the radio) her song, "God Bless the Child." Holiday did indeed first record this song in 1941, but the version heard in the film is from much later, after the war, in the 1950s (It is believed to be a version which was recorded for the Verve label). The version which should have been heard in the film was recorded in 1941 for the Okeh label, and is now part of the Columbia Records catalog.