The previously untold origins of Olaf, the innocent and insightful, summer-loving snowman are revealed as we follow Olaf’s first steps as he comes to life and searches for his identity in the snowy mountains outside Arendelle.
Unfortunately the movie Once Upon a Snowman is not yet available on HBO Max.
| Sound | Jeff Morrow | Original Music Composer |
| Sound | Christophe Beck | Original Music Composer |
| Production | Peter Del Vecho | Producer |
| Directing | Dan Abraham | Director |
| Production | Nicole P. Hearon | Producer |
| Directing | Trent Correy | Director |
| Production | Jennifer Lee | Executive Producer |
| Editing | Jeff Draheim | Editor |
| Art | Lisa Keene | Production Design |
| Crew | Chris Buck | Creative Consultant |
| Visual Effects | Steve Goldberg | Visual Effects Supervisor |
| Sound | Odin Benitez | Supervising Sound Editor |
| Art | Michael Giaimo | Production Design |
| Writing | Carrie Liao | Story Artist |
| Production | Jamie Sparer Roberts | Casting |
| Production | James E. Hasman | Associate Producer |
| Crew | Tom MacDougall | Executive Music Producer |
| Visual Effects | Rebecca Wilson Bresee | Head of Animation |
| Sound | Odin Benitez | Sound Designer |
| Writing | Seth Boyden | Story Artist |
