| Description | Character | Actor/Actress |
| famous paleontologist from Montana visiting Jurassic Park | |
| paleobotanist visiting the park with Sam Neil's character | |
| mathematician who preaches the chaos theory | |
| owner of InGen | |
| park's game warden | |
| head of InGen's account with the law firm Cowain, Swain, and Ross | |
| park owner's grandson | |
| park owner's granddaughter | |
| head engineer of Jurassic Park; over confident about park's safety | |
| head scientist in the dino cloning process | |
| park's system designer; steals dino embryos | |