CLARK KENT will have plenty of reasons to remember his senior year! The thrilling reinterpretation of the SUPERMAN legend evolves in Season 4, whose 22 episodes include the quest for 3 KRYPTONIAN crystals... and Clark's bold attempt to keep those mysterious stones from destroying Earth. Clark also becomes a highly recruited football star. Lana embarks on a new romance and LOIS LANE -- smart, opinionated and entirely annoying to Clark -- comes to SMALLVILLE. This season also shows how Chloe learns the scoop of the century, Lionel becomes a straight-up nice guy (stay tuned), Lex steps further into the darkness and a new calling awaits Clark -- an awakening to a destiny that only he can accept and fulfill.
Episodes:
1. Crusade
2. Gone
3. Façade
4. Devoted
5. Run
6. Transference
7. Jinx
8. Spell
9. Bound
10. Scare
11. Unsafe
12. Pariah
13. Recruit
14. Krypto
15. Sacred
16. Lucy
17. Onyx
18. Spirit
19. Blank
20. Ageless
21. Forever
22. Commencement
| Tom Welling | Clark Kent |
| Kristin Kreuk | Lana Lang |
| Michael Rosenbaum | Lex Luthor |
| Jensen Ackles | Jason Teague |
| Allison Mack | Chloe Sullivan |
| John Glover | Lionel Luthor |
| Annette O'Toole | Martha Kent |
| John Schneider | Jonathan Kent |
| Erica Durance | Lois Lane |
| Margot Kidder | Bridgette Crosby |
| Ona Grauer | Dr. Gabrielle Vaughan |
| Dan Joffre | Admissions Nurse |
| Rekha Sharma | Dr. Harden |
| Mina E. Mina | Arab Digger |
| Bill Meilen | |
| Ian Robison | Pilot |
| Viv Leacock | Co-Pilot |
| Alexander Kalugin | The Seer |
| Helena Yea | Hospital Patient On Looker |
| Michael Ironside | General Sam Lane |
| Robert Wisden | Gabe Sullivan |
| James Bell | Trent |
| Colin Lawrence | Agent Stocker |
| James Michalopoulos | Prisoner |
| Michael Jonsson | Agent Stocker |
| Brianna Brown | Abigail Fine |
| Eric Johnson | Whitney Fordman |
| Julianne Christie | Dr. Elaine Fine |
| Lee Rumohr | Brett Anderson |
| Rob Freeman | Coach Quigley |
| Jared Keeso | Nate |
| Amanda Walsh | Mandy |
| Chelan Simmons | Rhonda |
| Lisa Marie Caruk | Mary |
| Moneca Delain | Mara |
| Graham Kosakoski | Dan Cormay |
| Colby Wilson | Lineman #1 |
| Graham Young | Lineman #2 |
| Anna Geisslinger | Cheerleader |
| Kyle Gallner | Bart Allen |
| Benjamin Ratner | Hanison |
| J. P. Manoux | Edgar Cole |
| Rick Faraci | Tattoed Inmate |
| Terence Kelly | Doctor |
| Trent Ford | Mikail Mxyzptlk |
| Kevan Kase | Danny Crozer |
| Karina Christianson | Cheerleader |
| Adam Thomas | Blues Player |
| William Taylor | Mr. Jacobson |
| Mark Acheson | Magistrate Wilkins |
| Lara Gilchrist | Madeleine |
| Melanie Papalia | Brianna |
| Jane Seymour | Genevieve Teague |
| Claudette Mink | Corinne Hartford |
| Cobie Smulders | Shannon Vell |
| Patricia Mayen-Salazar | Maid |
| Omar Forrest | |
| Melissa Poll | Woman with Twins |
| Malcolm Stewart | Dr. Otis Ford |
| Jerry Wasserman | Dr. Scanlan |
| Samantha Ferris | Warden Anita Stone |
| Norm Sherry | Guard |
| Dave Ward | |
| Wendy Chmelauskas | Laura Lang |
| Ben Odberg | Lewis Lang |
| Michael Hanus | |
| Lindsay Bourne | Chloe's Mother |
| Sarah Carter | Alicia Baker |
| John Pyper-Ferguson | Dr. William McBride |
| Ron Selmour | Asylum Attendant |
| Don MacKay | Las Vegas Minister |
| Wendy Morrow Donaldson | Las Vegas Organist |
| Sandra Ferens | Coroner |
| R. David Stephens | Doctor |
| Derek Hamilton | Tim Westcott |
| Camille Mitchell | Sheriff Nancy Adams |
| Nicolas Pernisco | Jack Garner |
| Chris Carmack | Geoff Johns |
| John Novak | MU Football Coach |
| Colby Johannson | Coop |
| Amanda Crew | Sorority Girl |
| Brandi Alexander | Sorority Girl |
| Kirsten Williamson | Sorority Girl |
| Steve Makaj | Gary Burgen - Metro Motors |
| Marcus Sim | Marcus |
| Nolan Funk | Zack Greenfield |
| Diego Klattenhoff | Josh Greenfield |
| Alvin Sanders | Store Owner |
| Alex Green | Doctor Kline |
| Bud the Dog | Einstein |
| Bucks the Dog | Hercules |
| Terence Stamp | the Voice of Jor-El |
| Byron Mann | Commander Cheng |
| Michelle Goh | Professor |
| Kai Nu | Chinese Soldier |
| Mike Wu | Chinese Soldier |
| Peyton List | Lucy Lane |
| Peter Wingfield | Marcus Becker |
| Erica Cerra | Warehouse Worker |
| Kaleena Kiff | Lex's Aide |
