- 24 Hours to Live
- A Day in the Life of a Classroom
- April Fool's Day
- Arnold
- Arnold & Lila
- Arnold Betrays Iggy
- Arnold Visits Arnie
- Arnold's Christmas
- Arnold's Halloween
- Arnold's Room
- Arnold's Thanksgiving
- Back to School
- Bag of Money
- Beaned
- Benchwarmer
- Best Friends
- Best Man
- Big Caesar
- Biosquare
- Chocolate Boy
- Cool Jerk
- Cool Party
- Crush on Teacher
- Curly Snaps
- Curly's Girl
- Dangerous Lumber
- Deconstructing Arnold
- Eating Contest
- Eugene's Birthday
- Eugene, Eugene!
- False Alarm
- Field Trip
- Fighting Families
- Friday the 13th
- Full Moon
- Gerald's Secret
- Gerald's Tonsils
- Ghost Bride
- Girl Trouble
- Grand Prix
- Harold vs. Patty
- Harold's Bar Mitzvah
- Headless Cabbie
- Helga vs. Big Patty
- Helga and the Nanny
- Helga Blabs It All
- Helga's Boyfriend
- Helga's Masquerade
- Helga's Show
- Hey Arnold! The Jungle Movie
- Hey Arnold! The Movie
- Hey Harold!
- Hookey
- Longest Monday
- Monkey Business
- Monkeyman!
- Ms. Perfect
- Mudbowl
- New Bully on the Block
- New Teacher
- On the Lam
- Parents Day
- Phoebe Breaks A Leg
- Phoebe Cheats
- Phoebe's Little Problem
- Pigeon Man
- Rhonda Goes Broke
- Rich Kid
- Roller Coaster
- Runaway Float
- Sally's Comet
- Save the Tree
- School Dance
- School Play
- Sid and Germs
- Sid the Vampire Slayer
- Sid's Revenge
- Stinky Goes Hollywood
- Stinky's Pumpkin
- Student Teacher
- Synchronized Swimming
- Teachers' Strike
- The Aptitude Test
- The Big Scoop
- The Flood
- The High Life
- The Journal
- The Little Pink Book
- The Pig War
- Tour de Pond
- Weighing Harold
- Weird Cousin
- What's Opera, Arnold?
- World Records
Non-speaking[]
- Arnold Saves Sid
- Arnold's Hat
- Arnold's Valentine
- Big Gino
- Big Sis
- Buses, Bikes, and Subways
- Career Day
- Crabby Author
- Dinner for Four
- Dino Checks Out
- Downtown as Fruits
- Egg Story
- Eugene Goes Bad
- Eugene's Bike
- Eugene's Pet
- Freeze Frame
- Gerald's Game
- Hall Monitor
- Harold's Kitty
- Helga on the Couch
- Helga's Love Potion
- Helga's Parrot (episode)
- Haunted Train (episode)
- Heat
- Helga Sleepwalks
- Helga's Makeover
- It Girl
- Love and Cheese
- Magic Show
- Married
- Mugged
- Olga Comes Home
- Olga Gets Engaged
- Operation Ruthless
- Part Time Friends
- Phoebe Skips
- Phoebe Takes the Fall
- Polishing Rhonda
- Principal Simmons
- Quantity Time
- Rhonda's Glasses
- Road Trip
- Snow
- Stoop Kid
- Stuck in a Tree
- Suspended
- The Baseball
- The List
- Timberly Loves Arnold
- Tutoring Torvald