- Sam Neill as Dr. Alan Grant
- Laura Dern as Dr. Ellie Sattler
- Jeff Goldblum as Dr. Ian Malcolm
- Richard Attenborough as John Hammond
- Bob Peck as Robert Muldoon
- Ariana Richards as Lex Murphy
- Joseph Mazzello as Tim Murphy
- Martin Ferrero as Donald Gennaro
- Samuel L. Jackson as Ray Arnold
- BD Wong as Dr. Henry Wu