The highest-grossing film of 1993; it outdid Steven Spielberg's own E.T. the Extra-Terrestrial (1982) as the then biggest success in film history. It would hold that record until Titanic (1997), and then James Cameron would also outperform himself with the release of Avatar (2009).
Jim Carrey was considered for the role of Ian Malcolm.
The Triceratops dung didn't smell at all; it was made of clay, mud and straw. It was drizzled in honey and papayas so flies would swarm near it.
Except for some very brief glimpses in the opening scene, the adult velociraptors - often cited as the most memorable dinosaurs in this film - don't make an on-screen appearance until over 103 minutes into the movie.
The crew were caught in a very dangerous Hurricane, Hurricane Iniki which hit the island of Kauai. The film-makers managed to capture shots from the Hurricane and use it in the movie. This incident was told in a recent episode of Storm Stories.
When Nedry is stealing the dinosaur embryos there is one labeled a Brontosaurus. Brontosaurus was not a real dinosaur but one named by a paleontologist that had the wrong skull on his specimen. The correct skull for the animal was found by a different scientist and it was then called the Apatosaurus.
Ariana Richards was upset by the fact that an action figure of her character was not produced. (Kenner only made dolls of Grant, Sattler, Muldoon, Nedry, Tim, and eventually Malcolm.)
In the scene where the survivors are crawling through vent spaces, the computer monitors are shining on the raptor after them. This is usually mistaken as being the shadows from the air vents. It's the letters GATC, the four letters used to denote the components of DNA.