

William Hurt was offered the role of Dr. Grant, but turned it down without reading the book or the script.
The park software is written in Pascal; a program is clearly visible in one of the monitor close-ups on the UNIX system. The graphical interface recognized as a UNIX system is Silicon Graphics 3D File System Navigator.
Dennis Nedry is an anagram of Nerdy Sinned.
Spielberg wanted the velociraptors to be about 10 feet tall, which was taller than they were known to be. During filming, scientists discovered 10 feet tall velociraptors.
A scene of Ellie pulling the leaf off an extinct plant appeared in the film trailers but not the film itself.
Fred Sorenson was the pilot who flew the crew off Kaui when the hurricane hit during production. He played Jock, the pilot who flew Indiana Jones away in the opening scene of Raiders of the Lost Ark (1981), also directed by Spielberg.