The following is a list of Hey Arnold! episodes on Nickelodeon.
Episodes[]
Season 1 (1996-1997)[]
- Downtown as Fruits / Eugene's Bike
- The Little Pink Book / Field Trip
- Arnold's Hat / Stoop Kid
- Helga's Makeover / The Old Building
- 6th Grade Girls / The Baseball
- Heat / Snow
- Operation Ruthless / The Vacant Lot
- The List / Haunted Train
- Mugged / Roughin' It
- Door #16 / Arnold as Cupid
- Benchwarmer / Cool Jerk
- Das Subway / Wheezin' Ed
- Tutoring Torvald / Gerald Comes Over
- Spelling Bee / Pigeon Man
- Olga Comes Home / Sally's Comet
- Abner Come Home / The Sewer King
- False Alarm / World Records
- Magic Show / 24 Hours To Live
- Part-Time Friends / Bio Square
- Arnold's Christmas
Season 2 (1997-1998)[]
- Helga's Boyfriend / Crush on Teacher
- Hall Monitor / Harold's Bad Mitzvah
- Coach Wittenberg / Four-Eyed Jack
- Tour de Pond / Teacher's Strike
- Arnold's Valentine
- Runaway Float / Partners
- The Big Scoop / Harold's Kitty
- Arnold Saves Sid / Hookey
- Save The Tree / New Teacher
- Ransom / Ms. Perfect
- Monkey Business / Big Caesar
- The High Life / Best Friends
- Longest Monday / Eugene's Pet
- Mud Bowl / Gerald Moves Out
- Freeze Frame / Phoebe Cheats
- Helga's Love Potion / Gerald's Secret
- Steely Phil / Quantity Time
- Eating Contest / Rhonda's Glasses
- Eugene Goes Bad / What's Opera, Arnold?
- Arnold's Halloween
Season 3 (1998-1999)[]
- The Aptitude Test / Oskar Gets A Job
- Curly Snaps / Pre-Teen Scream
- Stinky Goes Hollywood / Olga Gets Engaged
- Crabby Author / Rich Kid
- Helga Blabs It All / Harold The Butcher
- Arnold Betrays Iggy / Helga and The Nanny
- Dangerous Lumber / Mr. Hyunh Goes Country
- Arnold's Room / Helga vs. Big Patty
- Career Day / Hey Harold!
- Casa Paradiso / Gerald's Tonsils
- Phoebe Takes The Fall / The Pig War
- Best Man / Cool Party
- Sid's Revenge / Roller Coaster
- Grandpa's Birthday / Road Trip
- Arnold and Lila / Grand Prix
- Arnold's Thanksgiving
- Girl Trouble / School Dance
- Helga's Show / The Flood
- School Play
- Parents Day
Season 4 (1999-2000)[]
- Eugene's Birthday / Stinky's Pumpkin
- Dinner For Four / Phoebe Skips
- Full Moon / Student Teacher
- Big Gino / Jamie O. In Love
- The Beeper Queen / Oskar Can't Read?
- Friday The 13th / Headless Cabbie
- Helga's Parrot / Chocolate Turtles
- Love and Cheese / Weighing Harold
- It Girl / Deconstructing Arnold
- Grudge Match / Polishing Rhonda
- Veterans Day
- Back To School / Egg Story
- Weird Cousin / Baby Oskar
- Helga Sleepwalks / Fighting Families
- Monkeyman! / Buses, Bikes and Subways
- Grandpa's Sister / Synchronized Swimming
- Helga's Masquerade / Mr. Green Runs
- Helga on The Couch
- Dino Checks Out
- Summer Love
Season 5 (2000-2001)[]
- Sid The Vampire Slayer / Big Sis
- Gerald's Game / Fishing Trip
- Bag of Money / Principal Simmons
- New Bully on The Block / Phoebe Breaks A Leg
- Stuck In A Tree / Rhonda Goes Broke
- Helga's Locket / Sid and Germs
- Beaned / Old Iron Man
- Ghost Bride / Gerald vs. Jamie O.
- Suspended / Ernie In Love
- Arnold Visits Arnie / Chocolate Boy
- Harold vs. Patty / Rich Guy
- The Racing Mule / Curly's Girl
- On The Lam / Family Man
- Grandpa's Packard / Phoebe's Little Problem
- A Day In The Life of a Classroom / Big Bob's Crisis
- Married
- Timberly Loves Arnold / Eugene, Eugene!
- April Fool's Day