Continuity: While Bryan is giving his final statement, Susan is seen sitting away from her mother in one shot and cuddled up next to her seconds later.
Continuity: When Jack and Alberta have dropped Kris off at the old folks' home and Jack is returning to the limousine, you can see Alberta's crossed legs through the open door. When Jack enters the car, however, Alberta's legs are completely covered by her overcoat.
Factual errors: When Santa Claus tells the little girl his name in other countries, he states that in Italy his name is "La Befana", however that is the name of the kind witch that flies around filling stockings on January 6th. His name in Italian is "Babbo Natale".
Continuity: Near the beginning of the film, when the drunk Santa falls off the parade float, you can see a sack full of presents on the back of the float. In the next shot, when people are lifting the sleigh off him, the presents have disappeared.
Revealing mistakes: In the Thanksgiving Parade scene, the trees in Central Park are seen budding for spring (the scene was shot in April).
Crew or equipment visible: While in Santa's room at the psychiatric hospital, a reflection of a crew member can be seen in the side of the shiny porcelain sink.