Dexter, a boy-genius with a secret laboratory, constantly battles his sister Dee Dee, who always gains access despite his best efforts to keep her out, as well as his arch-rival and neighbor, Mandark.
You can now watch Dexter's Laboratory online on the following streaming platforms in the United States.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Dee Deemensional - Dial M For Monkey: Magmanamus - Maternal Combat | 1996-04-28 | 30 min |
| Season 1 | Episode 2 | Dexter Dodgeball - Dial M For Monkey: Rasslor - Dexter's Assistant | 1996-05-05 | 30 min |
| Season 1 | Episode 3 | Dexter's Rival - Dial M For Monkey: Simion - Old Man Dexter | 1996-05-12 | 30 min |
| Season 1 | Episode 4 | Double Trouble - Dial M For Monkey: Barbequor - Dexter's Laboratory(Changes) | 1996-05-19 | 30 min |
| Season 1 | Episode 5 | Jurassic Pooch - Dial M For Monkey: Orgon Grindor - Dimwit Dexter | 1996-05-26 | 30 min |
| Season 1 | Episode 6 | Dee Dee's Room - Dial M For Monkey: Huntor - The Big Sister | 1996-06-02 | 30 min |
| Season 1 | Episode 7 | Star Spangled Sidekicks - The Justice Friends: TV Super Pals - Game Over | 1996-11-20 | 30 min |
| Season 1 | Episode 8 | Babysitter Blues - The Justice Friends: Valhallen's Room - Dream Machine | 1996-11-27 | 30 min |
| Season 1 | Episode 9 | Dollhouse Drama - The Justice Friends: Krunk's Date - The Big Cheese | 1996-12-04 | 30 min |
| Season 1 | Episode 10 | Way of the Dee Dee - The Justice Friends: Say Uncle Sam - Tribe Called Girl | 1996-12-11 | 30 min |
| Season 1 | Episode 11 | Spacecase - The Justice Friends: Ratman - Dexter's Debt | 1996-12-18 | 30 min |
| Season 1 | Episode 12 | Dexter's Rival - The Justice Friends: Bee Where - Mandarker | 1996-12-25 | 30 min |
| Season 1 | Episode 13 | Inflata Dee Dee - The Justice Friends: Can't Nap - Monstory | 1997-01-01 | 30 min |
| Season 2 | Episode 1 | Beard to Be Feared/Quackor the Fowl/Ant Pants | 1997-07-16 | 30 min |
| Season 2 | Episode 2 | Mom and Jerry/Chubby Cheese/That Crazy Robot | 1997-07-23 | 30 min |
| Season 2 | Episode 3 | D & DD/Hamhocks and Armlocks | 1997-07-30 | 30 min |
| Season 2 | Episode 4 | Hunger Strikes/The Koos is Loose/Morning Stretch | 1997-08-06 | 30 min |
| Season 2 | Episode 5 | Dee Dee Locks and the Ness Monster/Backfire/Book 'Em | 1997-08-13 | 30 min |
| Season 2 | Episode 6 | Sister's Got a Brand New Bag/Shoo, Shoe Gnomes/Lab of the Lost | 1997-08-20 | 30 min |
| Season 2 | Episode 7 | Labels/Game Show/Fantastic Boyage | 1997-08-27 | 30 min |
| Season 2 | Episode 8 | Filet of Soul/Golden Diskette | 1997-09-03 | 30 min |
| Season 2 | Episode 9 | Snowdown/ *figure not included/Mock 5 | 1997-09-10 | 30 min |
| Season 2 | Episode 10 | Ewww That's Growth/Nuclear Confusion/Germ Warfare | 1997-09-17 | 30 min |
| Season 2 | Episode 11 | A Hard Day's Day/Road Rash/Ocean Commotion | 1997-09-24 | 30 min |
| Season 2 | Episode 12 | The Bus Boy/The Justice Friends: Things That Go Bonk in the Night/Ol' McDexter | 1997-10-01 | 30 min |
| Season 2 | Episode 13 | Sassy Come Home/Photo Finish | 1997-10-08 | 30 min |
| Season 2 | Episode 14 | Star Check Unconventional/Dexter is Dirty/Ice Cream Scream | 1997-10-15 | 30 min |
| Season 2 | Episode 15 | Decode of Honor/World's Greatest Mom/Ultrajerk 2000 | 1997-10-22 | 30 min |
| Season 2 | Episode 16 | Techno Turtle/Surprise!/Got Your Goat | 1997-10-29 | 30 min |
| Season 2 | Episode 17 | Dee Dee Be Deep/911/Down in the Dumps | 1997-11-05 | 30 min |
| Season 2 | Episode 18 | Unfortunate Cookie/The Muffin King | 1997-11-12 | 30 min |
| Season 2 | Episode 19 | Picture Day/Now That's a Stretch/Dexter Detention | 1997-11-19 | 30 min |
| Season 2 | Episode 20 | Don't Be a Baby/Dial M for Monkey: Peltra/G.I.R.L. Squad | 1997-11-26 | 30 min |
| Season 2 | Episode 21 | Sports-a-Poppin'/Koos a la Goop a Goop/Project Dee Dee | 1997-12-03 | 30 min |
| Season 2 | Episode 22 | Topped Off/Dee Dee's Tail/No Power Trip | 1998-01-14 | 30 min |
| Season 2 | Episode 23 | Sister Mom/The Laughing | 1998-01-21 | 30 min |
| Season 2 | Episode 24 | Dexter's Lab: A Story/Coupon for Craziness/Better Off Wet | 1998-01-28 | 30 min |
| Season 2 | Episode 25 | Critical Gas/Let's Save the World You Jerk!/Average Joe | 1998-02-04 | 30 min |
| Season 2 | Episode 26 | Rushmore Rumble/A Boy and His Bug/You Vegetabelieve It! | 1998-02-11 | 30 min |
| Season 2 | Episode 27 | Aye Aye Eyes/Dee Dee and the Man | 1998-02-18 | 30 min |
| Season 2 | Episode 28 | Old Flame/Don't Be a Hero/My Favorite Martian | 1998-02-25 | 30 min |
| Season 2 | Episode 29 | Paper Route Bout/The Old Switcharooms/Trick or Treehouse | 1998-03-04 | 30 min |
| Season 2 | Episode 30 | Quiet Riot/Accent You Hate/Catch of the Day | 1998-03-11 | 30 min |
| Season 2 | Episode 31 | Dad is Disturbed/Framed/That's Using Your Head | 1998-03-18 | 30 min |
| Season 2 | Episode 32 | DiM/Just an Old Fashioned Lab Song.../Repairanoid | 1998-03-25 | 30 min |
| Season 2 | Episode 33 | Sdrawkcab/The Continuum of Cartoon Fools/Sun, Surf, and Science | 1998-04-01 | 30 min |
| Season 2 | Episode 34 | Big Bots/Gooey Aliens That Control Your Mind/Misplaced in Space | 1998-04-08 | 30 min |
| Season 2 | Episode 35 | Dee Dee's Rival/Pslightly Psycho/Game for a Game | 1998-04-15 | 30 min |
| Season 2 | Episode 36 | Blackfoot and Slim/Trapped with a Vengeance/The Parrot Trap | 1998-04-22 | 30 min |
| Season 2 | Episode 37 | Dexter and Computress Get Mandark!/The Justice Friends: Pain in the Mouth/Dexter Vs. Santa's Claws | 1998-04-29 | 30 min |
| Season 2 | Episode 38 | Dyno-Might/LABretto | 1998-05-06 | 30 min |
| Season 2 | Episode 39 | Last But Not Beast | 1998-06-15 | 30 min |
| Season 3 | Episode 1 | Streaky Clean/A Dad Cartoon/Sole Brother | 2001-11-16 | 30 min |
| Season 3 | Episode 2 | Mind Over Chatter/A Quakor Cartoon/Momdark | 2001-11-16 | 30 min |
| Season 3 | Episode 3 | Copping an Aptitude/A Failed Lab Experiment/The Grand-Daddy of All Inventions | 2001-11-30 | 30 min |
| Season 3 | Episode 4 | Poppa Wheely/A Mom Cartoon/The Mock Side of the Moon | 2002-01-18 | 30 min |
| Season 3 | Episode 5 | If Memory Serves/A Mandark Cartoon/Tele Trauma | 2002-02-22 | 30 min |
| Season 3 | Episode 6 | A Boy Named Sue/Lab on the Run | 2002-03-29 | 30 min |
| Season 3 | Episode 7 | Dos Boot/A Dee Dee Cartoon/Would You Like That In The Can | 2002-06-07 | 30 min |
| Season 3 | Episode 8 | That Magic Moment/A Silent Cartoon/Opposites Attract | 2002-06-14 | 30 min |
| Season 3 | Episode 9 | Comic Relief/A Third Dad Cartoon/RoboDexo 3000 | 2002-06-21 | 30 min |
| Season 3 | Episode 10 | Glove at First Sight/A Mom & Dad Cartoon/Smells Like Victory | 2002-06-28 | 30 min |
| Season 3 | Episode 11 | Oh, Brother?/Another Dad Cartoon/Bar Exam | 2002-07-05 | 30 min |
| Season 3 | Episode 12 | Jeepers, Creepers, Where is Peepers?/Go, Dexter Family, Go! | 2002-07-12 | 30 min |
| Season 3 | Episode 13 | Scare Tactics/A Mom Cartoon/My Dad vs. Your Dad | 2002-09-20 | 30 min |
| Season 4 | Episode 1 | Beau Tie/Remember Me/Overlabbing | 2002-11-22 | 30 min |
| Season 4 | Episode 2 | Sis-Tem Error/Bad Cable Manners/Dexter's Library | 2003-04-25 | 30 min |
| Season 4 | Episode 3 | The Scrying Game/Monstrosi-Dee Dee/Dad Man Walking | 2003-05-02 | 30 min |
| Season 4 | Episode 4 | Dexter's Little Dilemma/Faux Chapeau/D2 | 2003-05-09 | 30 min |
| Season 4 | Episode 5 | Head Band/Stuffed Animal House/Used Ink | 2003-05-16 | 30 min |
| Season 4 | Episode 6 | School Girl Crushed/Chess Mom/Father Knows Least | 2003-05-23 | 30 min |
| Season 4 | Episode 7 | Dexter the Barbarian/Tuber Time/Sore Eyes | 2003-05-30 | 30 min |
| Season 4 | Episode 8 | Babe Sitter/Mountain Mandark/2Geniuses 2Gether 4Ever | 2003-09-05 | 30 min |
| Season 4 | Episode 9 | Height Unseen/Bygone Errors/Folly Calls | 2003-09-12 | 30 min |
| Season 4 | Episode 10 | Voice Over/Blonde Leading the Blonde/Comic Stripper | 2003-09-19 | 30 min |
| Season 4 | Episode 11 | Tee Party/Dexter's Wacky Races | 2003-09-26 | 30 min |
| Season 4 | Episode 12 | The Lab of Tomorrow/Garage Sale/Chicken Scratch | 2003-11-04 | 30 min |
| Season 4 | Episode 13 | They Got Chops/Poetic Injustice/Comedy of Feathers | 2003-11-20 | 30 min |
| Writing | Seth MacFarlane | Writer |
| Writing | Amy Keating Rogers | Writer |
| Writing | Jason Butler Rote | Writer |
| Writing | Michael Ryan | Writer |
| Production | Larry Huber | Producer |
| Production | Davis Doi | Producer |
| Production | Genndy Tartakovsky | Producer |
| Production | Sherry Gunther | Executive Producer |
| Visual Effects | Andy Bialk | Character Designer |
| Writing | Michael Carnes | Writer |
| Writing | Josh Gilbert | Writer |
