Continuity mistake: In the scene where Forrest goes and visits Jenny (and is introduced to his son), there is an iron on the ironing board in the background. It stands up, then down, then up. The child's artwork in the background also disappears.
Factual error: Jenny shows Forrest a clipping of him in U.S.A Today (first published in September 1982), but on Jenny's grave it says she died on March 22 1982.
Revealing mistake: When Forrest finally catches shrimp on the boat, the net drops shrimp on the deck which are not only already dead, they're headless and very obviously processed for shipment to market.
Factual error: When Forrest is talking to Jenny at her grave, he says "You died on a Saturday morning." But 22 March 1982 (the date on the grave) was a Monday.
Factual error: During the 1972 New Year's Eve celebration, Forrest drinks a Dr. Pepper with a logo that wasn't devised until around the mid 80s.
Other mistake: Forrest begins his run across America the day President Carter collapses in Maryland. This is October 1, 1979. When he stops running, he says: 'I had run for three years, two months, fourteen days, and sixteen hours.' Some time later, he gets Jenny's letter - the day President Reagan is attacked. This is March 30, 1981. So, he only ran for one and a half years.
Factual error: When Forrest and Lt. Dan first try catching shrimp on the new boat they catch a bunch of junk, including a Mello Yello can, which hadn't been invented yet.
Factual error: In the scene where Forrest gets his discharge papers, he is practicing table tennis in a gym. The gym floor has a three-point line on the basketball court. It is a college or high school three point line- 19 feet, 9 inches. There was no three pointer in basketball at that time, especially at that distance.
Continuity mistake: When Forrest runs towards Jenny in the reflecting pond during the Anti-Vietnam Rally, he runs by the same man twice. Look carefully for the man in the top hat and you will see it is really the same shot from two different angles.
Continuity mistake: In the scene where Forrest is getting on the school bus for his first day at school, he is standing at the door talking to Dorothy Harris, the bus driver. The shot from behind Forrest shows Dorothy's right hand on the gear shift knob. In the next shot, from inside the bus looking down at Forrest, her right hand is on the door-open lever. This shot changes several times, and each time her right hand is in those two different positions.
Factual error: In the scene where Forrest's platoon is crouched down along the side of the road, and the narration is introducing some of the soldiers, you can see a pack of Marlboro cigarettes in one of the men's helmets. On the side of the pack is, "Marlboro Miles." These weren't available until the 1990's.
Continuity mistake: During Forrest's first football game, he is standing staring off into space when they receive the kickoff, his teammate runs over to him, hands him the ball, and tells him to run. Forrest says, "Okay". The camera cuts to the coach on the sideline who is yelling for him to "run!, run!", while at the same time his head is turning as if he is watching Forrest run past him. The next camera shot shows Forrest running, but he has not yet gotten to the point on the sideline where the coach and the team are standing.
Audio problem: During the football match when Forrest runs and bumps into the band players, we hear what sounds like cymbals crashing/dropping to the ground. But if you look at the band players he knocks over, there are no cymbals anywhere near them.
Continuity mistake: When Forrest sees Jenny at the anti-war demonstration in Washington D.C. he runs through the crowd towards the pond. We see that the gap between the people who let him through closes immediately after him, but in the last shot it remains wide open, obviously to allow a more dramatic view of Jenny's and Forrest's reunion. However, when the crowd is shown from the other side there's no gap at all.
Factual error: Near the end of the movie when Jenny visits Forrest, it is supposed to be July 4th, 1976. On her TV is the New York Harbour Bi-centennial Celebration, and a shot of the Statue of Liberty shows her with a "gold" torch, which was added as part of her restoration in 1986.
Factual error: In the scene where Forrest Gump is wheeling Lt. Dan across a street between a bunch of taxis, the car they go behind is a 1973 Chevrolet Caprice (see the tail lights). However, several scenes later we know the year is 1971 because it is New Year's Eve 1971 because we see the TV flash 1972 as the year changes.
Continuity mistake: In the scene where Lt. Dan is waiting on Forrest at the dock, and Forrest jumps overboard off his boat to swim over to meet him, Forrest's hair and face are mysteriously dry for him to have just come out of the water, as if he towelled off his head before climbing the steps up to the platform.
Revealing mistake: In the scene where Lt. Dan chases the hookers out of his apartment, if you look closely at how he's carrying himself you can see Sinise use his real leg (which was then hidden by the special effects people) to push himself back into his wheelchair.
Factual error: Bubba says he was drafted into the Army, but his gravestone says he was born on March 2, 1943. The first draft for service to the Vietnam conflict was limited to men born between 1944 and 1950. Subsequent drafts were for men born in 1951 - 1953. Bubba was born a year too early to have been included in the first draft.
Continuity mistake: When Forrest lifts Lt. Dan to carry him out of the jungle, there is a pack slung over Lt. Dan's left shoulder. When the shot changes to Forrest carrying him over his shoulder the pack has disappeared, without time for it to have fallen off. Notice, this pack is separate from Lt. Dan's large field pack, which Forrest does unbuckle before he lifts him onto his shoulder.
Continuity mistake: After Forrest gets his medal he meets Jenny at the anti-war demonstration. When she goes to the bus to leave they are standing talking. In one shot his medal is tucked inside his jacket, but in the next shot (right before he takes his medal off) it is on the outside of his jacket.
Continuity mistake: When Bubba and Forrest have just arrived in Vietnam, they are walking along a boardwalk and pass a sign. The shot changes and faces them, but the sign is gone.
Continuity mistake: In the scene where Forrest is attacked by boys who are throwing stones he is hit underneath his right eye. In the next shot you can see Forrest bleeding from a wound on his forehead.
Revealing mistake: While Forrest is playing the Chinese ping pong player, the camera shows him returning powerful volleys with ease. During one of these returns, his hand and arm bend at an unnatural angle due to the CGI graphics changing a forehand shot to a backhand shot.
Continuity mistake: The first time that Forrest runs across the football field, a front view of the coach's head shows him following Forrest without moving his head, coach just moves his eyes. But a back view of the coach's head shows the head moving, following Forrest's movement. Back to the front view and the head is still.
Continuity mistake: When the platoon is walking down the trail and he says they are always looking for a man named Charlie, he has a pack of matches in his helmet from his rations. When they get on their feet, he has a pack of napkins next to the matches.