Luitenant Pendelton participeert in een experiment waarbij hij tot de grootte van een molecuul wordt gereduceerd. Maar hij wordt gestolen en komt per ongeluk met zijn capsule terecht in de bloedbanen van de slome Jack die zich tot held moet ontwikkelen om Pendelton te redden. Hun enige hoop is de vriendin van Pendelton, die journalist is.
Nee, helaas is Innerspace nog niet beschikbaar op Netflix in Nederland.
| Sound | Jerry Goldsmith | Original Music Composer |
| Writing | Jeffrey Boam | Screenplay |
| Writing | Chip Proser | Screenplay |
| Crew | Pete Kozachik | Special Effects |
| Directing | Joe Dante | Director |
| Crew | Mike Johnson | Stunts |
| Costume & Make-Up | Rob Bottin | Makeup Effects Designer |
| Crew | Corey Michael Eubanks | Stunts |
| Crew | Al Wyatt Sr. | Stunts |
| Crew | Cindy Wills | Stunts |
| Crew | Simone Boisseree | Stunts |
| Crew | Dick Warlock | Stunts |
| Crew | Steven Lambert | Stunt Double |
| Sound | Rod Stewart | Songs |
| Visual Effects | Michael Wood | Special Effects Supervisor |
| Visual Effects | Dennis Muren | Visual Effects Supervisor |
| Camera | Andrew Laszlo | Director of Photography |
| Production | Mike Fenton | Casting |
| Production | Jane Feinberg | Casting |
| Production | Judy Taylor | Casting |
| Production | Chip Proser | Co-Producer |
| Editing | Kent Beyda | Editor |
| Art | James H. Spencer | Production Design |
| Production | Frank Marshall | Co-Executive Producer |
| Production | Kathleen Kennedy | Co-Executive Producer |
| Production | Jon Peters | Executive Producer |
| Production | Steven Spielberg | Executive Producer |
| Production | Peter Guber | Executive Producer |
| Writing | Chip Proser | Story |
| Production | Michael Finnell | Producer |
| Production | John C. Broderick | Unit Production Manager |
| Directing | Pat Kehoe | First Assistant Director |
| Directing | Carol Green | Second Assistant Director |
| Sound | Mark Mangini | Supervising Sound Editor |
| Art | William F. Matthews | Art Direction |
| Art | Richard C. Goddard | Set Decoration |
| Costume & Make-Up | Rosanna Norton | Costume Design |
| Directing | Anne Warner | Script Supervisor |
| Editing | Mark Goldblatt | Additional Editor |
| Sound | Kenneth Hall | Music Editor |
| Sound | Warren Hamilton Jr. | Sound Editor |
| Sound | James Matheny | Sound Editor |
| Sound | Teresa Eckton | Sound Editor |
| Sound | Wayne Allwine | Sound Editor |
| Sound | John Pospisil | Sound Editor |
| Sound | Ken King | Production Sound Mixer |
| Sound | Douglas Vaughan | Boom Operator |
| Sound | Robert J. Litt | Sound Re-Recording Mixer |
| Sound | Steve Maslow | Sound Re-Recording Mixer |
| Sound | Elliot Tyson | Sound Re-Recording Mixer |
| Lighting | James Plannette | Gaffer |
| Camera | Ray Kinzer | Key Grip |
| Crew | Glenn Randall Jr. | Stunt Coordinator |
| Art | Michael Muscarella | Construction Coordinator |
| Art | Craig Raiche | Property Master |
| Art | Judy Cammer | Set Designer |
| Art | Gene Nollman | Set Designer |
| Costume & Make-Up | Stephen Abrums | Makeup Artist |
| Costume & Make-Up | John Rizzo | Makeup Artist |
| Costume & Make-Up | Joy Zapata | Hairstylist |
| Costume & Make-Up | Barbara Lorenz | Hairstylist |
| Editing | Terry Haggar | Color Timer |
| Art | Wayne Fitzgerald | Title Designer |
| Art | David Oliver Pfeil | Title Designer |
