Season
- Season 5 2001-03-04
- Season 4 1999-03-10
- Season 3 1998-08-31
- Season 2 1997-09-22
- Season 1 1996-10-07
- Season 0 1994-06-16
Episode
- Episode 1: Downtown as Fruits
- Episode 2: Eugene's Bike
- Episode 3: The Little Pink Book
- Episode 4: Field Trip
- Episode 5: Arnold's Hat
- Episode 6: Stoop Kid
- Episode 7: Helga's Makeover
- Episode 8: The Old Building
- Episode 9: 6th Grade Girls
- Episode 10: The Baseball
- Episode 11: Heat
- Episode 12: Snow
- Episode 13: Operation Ruthless
- Episode 14: The Vacant Lot
- Episode 15: The List
- Episode 16: Haunted Train
- Episode 17: Mugged
- Episode 18: Roughin' It
- Episode 19: Door #16
- Episode 20: Arnold as Cupid
- Episode 21: Arnold's Christmas
- Episode 22: Benchwarmer
- Episode 23: Cool Jerk
- Episode 24: Das Subway
- Episode 25: Wheezin' Ed
- Episode 26: Arnold the Tutor
- Episode 27: Gerald Comes Over
- Episode 28: Spelling Bee
- Episode 29: Pigeon Man
- Episode 30: Olga Comes Home
- Episode 31: Sally's Comet
- Episode 32: Abner Come Home
- Episode 33: The Sewer King
- Episode 34: False Alarm
- Episode 35: World Records
- Episode 36: Magic Show
- Episode 37: 24 Hours to Live
- Episode 38: Arnold's Valentine
Hey Arnold! Season 1 Haunted Train
The daily life of Arnold--a fourth-grader with a wild imagination, street smarts and a head shaped like a football.
