All 96 actors in both Battlestar Galactica and Smallville
96 actors have appeared in both Battlestar Galactica and Smallville, across 290 episodes. The most-credited is Alessandro Juliani, Felix Gaeta in Battlestar Galactica and Dr. Emil Hamilton in Smallville.
| Actor | In Battlestar Galactica | In Smallville | Eps | Eps |
|---|---|---|---|---|
| Alessandro Juliani | Felix Gaeta | Dr. Emil Hamilton | 48 | 14 |
| Michael Hogan | Saul Tigh | Slade Wilson | 51 | 2 |
| Tahmoh Penikett | Karl "Helo" Agathon | Wesly Keenan, Vince Davis | 48 | 3 |
| Rekha Sharma | Tory Foster | Dr. Harden | 31 | 7 |
| Donnelly Rhodes | Dr. Cottle | Milash | 36 | 1 |
| Kandyse McClure | Anastasia "Dee" Dualla | Harmony | 54 | 1 |
| Aaron Douglas | Galen Tyrol | Deputy Michael Vertigo, Pierce | 49 | 2 |
| Callum Keith Rennie | Leoben Conoy, Number Two | Tyler McKnight | 20 | 1 |
| Colin Lawrence | Ensign Hamish "Skulls" McCall | Agent Stocker, Captain Nichols, Doctor | 13 | 3 |
| Alisen Down | Jean Barolay | Lillian Luthor | 8 | 5 |
| Mike Dopud | Specialist Gage, Gage | Security Guard George | 3 | 10 |
| Lorena Gale | Elosha | Dr. Claire Foster | 8 | 3 |
| Luciana Carro | Captain Louanne "Kat" Katraine | Karen, Talon Waitress | 17 | 2 |
| Nicki Clyne | Callandra "Cally" Henderson | Rose | 36 | 1 |
| Ryan McDonell | Lt. Eammon "Gonzo" Pike, Pilot #3 | Stuart Campbell | 5 | 4 |
| Adrian Holmes | Specialist Parr | Basqat, Griff | 1 | 7 |
| Robert Wisden | Wallace Gray | Gabe Sullivan | 1 | 6 |
| Don Thompson | Specialist 3rd Class Anthony Figurski | Jack Cole | 10 | 2 |
| Malcolm Stewart | Marshall Bagot | Dr. Otis Ford, Dr. Sinclair, Jim Melville | 3 | 3 |
| Dominic Zamprogna | James "Jammer" Lyman | Bruno Mannheim | 10 | 1 |
| Brad Dryborough | Lt. Louis Hoshi | Dr. Bauer | 19 | 1 |
| Jerry Wasserman | Cabott | Dr. Yaeger Scanlan | 1 | 4 |
| Sebastian Spence | Narcho, Pegasus Viper Pilot | Ted Kord | 9 | 1 |
| Andrew McIlroy | Jacob Cantrell | Yuri antiquarian | 7 | 1 |
| Chris Shields | Cpl. Venner | Courier, EMT #1, Reporter | 4 | 4 |
| Leela Savasta | Tracey Anne | Gretchen Winters, Talon Girl | 6 | 2 |
| Ron Selmour | Seaborne | Wendell Connelly | 1 | 3 |
| Simone Bailly | Shona | Jacquie Gould, Star | 2 | 10 |
| Erica Cerra | Maya | Adrianna Tomaz, Lex's Aid, Sorority Girl | 4 | 3 |
| Jill Teed | Sergeant Hadrian | Detective Maggie Sawyer | 2 | 4 |
| Judith Maxie | Picon Delegate | Dr. Albright | 7 | 2 |
| Ty Olsson | Captain Aaron Kelly | Officer Talbert | 8 | 1 |
| Lara Gilchrist | Paulla Schaffer | Madelyn Hibbins | 10 | 1 |
| Colin Corrigan | Marine Allan Nowart | Dante's Mechanic | 12 | 1 |
| Eileen Pedde | Sgt. Mathias | Jennifer Small | 7 | 2 |
| Aleks Paunovic | Marine Sgt. Fischer | Orderly, Thug #1 | 4 | 2 |
| Benjamin Ayres | Lt. George "Catman" Birch | Jason Bartlett | 1 | 5 |
| Ryan Robbins | Charlie Connor | Louis Leery Jr. | 7 | 1 |
| Tiffany Lyndall-Knight | Hybrid | Nurse | 9 | 1 |
| G. Patrick Currie | Enzo | Doctor Lance | 2 | 1 |
| John Pyper-Ferguson | Captain Cole "Stinger" Taylor | Dr. William McBride | 2 | 1 |
| Veena Sood | Quorum Delegate | Schoolteacher | 4 | 2 |
| Lori Ann Triolo | Phoebe | Lt. Trotter | 1 | 3 |
| Biski Gugushe | Sekou Hamilton | Security Guard | 8 | 1 |
| Craig Veroni | Maldonaldo | Security Guard, State Trooper | 2 | 2 |
| Emilie Ullerup | Julia | Catherine Grant | 2 | 1 |
| Eric Breker | Chu, Gemenon Captain | Roy Rothman | 2 | 1 |
| Gabrielle Rose | Mrs. King | Mrs. Arkin | 1 | 1 |
| Graham Young | Marine #1 | Ken | 1 | 2 |
| Heather Doerksen | Marine 2, Marine with a sandwich, Sgt. Brandy Harder | Erica Poss | 4 | 1 |
| Kavan Smith | Lt. Richard "Buster" Baier | Wade Mahaney | 1 | 1 |
| Kimani Ray Smith | Pegasus Sergeant | Bus Driver, Monitoring Astronomer | 1 | 2 |
| Samantha Ferris | Pollux | Warden Anita Stone | 1 | 1 |
| P.J. Prinsloo | Lt. Mei "Freaker" Firelli | Punk #1, Ron Troupe | 3 | 2 |
| Brad Loree | Bonnington, Helo Stunt Double | Bartender, Surgeon | 2 | 2 |
| David Richmond-Peck | Naylin Stans | Director, March Sosnick, Pete O'Grady | 1 | 3 |
| Chelah Horsdal | Didi Cassidy | Dr. McCann | 2 | 1 |
| Dan Payne | Sean | LuthorCorp Pilot | 1 | 2 |
| Jim Shield | Karma | James Gibson, Sylvester Pemperton / Star-Spangled Kid | 1 | 2 |
| Alex Zahara | Valance | Dr. Jansen | 1 | 1 |
| Amber Rothwell | Rya Kibby | Emily Dinsmore | 1 | 1 |
| Christopher Jacot | Ensign Brent "BB" Baxton | Ben Meyers | 1 | 1 |
| Claudette Mink | Shevon | Corinne Hartford | 1 | 1 |
| Paul Perri | Royan Jahee | John Baker | 1 | 1 |
| William Samples | Judge #2, Captain Greene | Sir Harry Hardwick | 3 | 1 |
| Jamie Bell | ECO, Lt. Steve "Red Devil" Fleer | Trent MacGowen | 2 | 1 |
| Kevin McNulty | Frank Porthos | Mr. Summers | 2 | 1 |
| Adrian G. Griffiths | Lt. Terry Burrell | Blackmailer | 1 | 1 |
| Brad Mann | Pegasus Marine | Twin #1 | 1 | 1 |
| Bryce Hodgson | Danny Noon | Young Duncan Allenmeyer | 1 | 1 |
| Mark Houghton | Vinson | Jonah Doyle | 1 | 1 |
| Patrick Gallagher | Leon Grimes | Bartender | 1 | 1 |
| Michael Tayles | Flyboy | Deputy Kaiden | 2 | 1 |
| Graeme Duffy | Adrien Bauer | Patient #2 | 1 | 1 |
| Kevan Kase | Pvt. Scott Kelso | Danny Crozer | 1 | 1 |
| Kurt Evans | Paramedic Howard Kim | EMT | 2 | 1 |
| Brent Stait | Mason | Kent Nelson / Dr. Fate | 1 | 1 |
| Byron Lawson | Pilot #4 | Terrence | 1 | 1 |
| Ivan Cermak | Corporal D. Wallace | Doctor | 1 | 1 |
| Jase Anthony Griffith | Stunt Thug | Belle Reve Guard | 1 | 1 |
| Michael Jonsson | Pegasus Guard #1 | Agent | 1 | 1 |
| Steve Lawlor | Guard, Marine at Baltar's | Lieutenant Taylor | 2 | 1 |
| Colby Johannson | Flat-Top | David 'Coop' Cooper | 2 | 1 |
| Aaron Pearl | Ensign Abel Thornton | Len Burton | 1 | 1 |
| Bill Meilen | Caprica Cleric | Egyptian Digger | 1 | 1 |
| Brad Kelly | Stunt Mechanic | Thug #3 | 1 | 1 |
| Fulvio Cecere | Lt. Alastair Thorne | Swim Coach Rick Varley | 1 | 1 |
| James Upton | Environmental Specialist | Frank Colbert | 1 | 1 |
| Curtis Caravaggio | Nathanson | Wingate Owner | 1 | 1 |
| Jennifer Kitchen | Marine | Nurse | 1 | 1 |
| Samantha Banton | Off-duty Crew Person | Nurse Sienen | 1 | 1 |
| Sarah Deakins | Cheryl | Reporter | 1 | 1 |
| Erica Carroll | Civilian | Inza Nelson | 1 | 1 |
| John Mann | Linden | Lachlan Luthor | 1 | 1 |
| Michael Ryan | Ray Abinell | Psychiatrist | 1 | 1 |
| Phillip Mitchell | Marine 1 Stunts | Guard | 1 | 1 |
← Battlestar Galactica × Smallville
Cast data from TVmaze, licensed CC BY-SA 4.0.