| Thomasina Coverly | | Zofia Goszczynska |
| Septimus Hodge | | Adam Friedman |
| Jellaby | | Edwin F. Beschler |
| Richard Noakes | | Cahal Stephens |
| Lady Croom | | Jennifer Bubriski |
| Capt. Brice, RN | | John Craig |
| Hannah Jarvis | | Kaitlyn Chantry |
| Chloe Coverly | | Allison Linker |
| Bernard Nightingale | | Owen Doyle |
| Valentine Coverly | | Mike Bash |
| Augustus Coverly | | Zach Adler |
Production Staff
| Executive Producer | | P. K. Newby |
| Production Manager | | Vilas Sridharan |
| Stage Manager | | AB Commendatore |
| Assistant Stage Manager | | Curtis Wright |
| Technical Director | | Martin Kemp |
| Set Designer | | John Randell |
| Lighting Designer | | Jeri Sykes |
| Costume Designer | | Tracy Campbell |
| Props Designer | | Shannon Riffe |
| Sound Designer | | Ben Markham |
| Dialect Coach | | Olivia Doran |
| Master Electrician, Assistant Lighting Designer | | Paul Mattal |
| Electricians | | Sarah Eggleston, Sarah Eisel, Ricky Morse |
| | Josh Randall, Steve Schwartzberg |
| Light Board Operator | | Siva Logan |
| Carpenters | | Joy Huang, Paul Mattal, John Randell, Curtis Wright |
| Scenic Artists | | Hannah Blitzblau, Shuyan Chen, Sarah Wall-Randell |
| House Manager | | P. K. Newby |
| Assistant House Manager | | Joy Huang |
| Graphic Designer | | Daniel J. Rabone |
| Playbill Designer | | Marc S. Miller |
