As of July 2026, Hey Arnold! Season 4 aired in 1999 with 31 episodes — streaming now on Paramount Plus. Full episode guide and where to watch below.
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Hey Arnold! Season 4

1999 31 Episodes Animation · Comedy ⭐ 8/10

Right now you can watch Hey Arnold! Season 4 on and — and it is funnier than its reputation suggests. A compact run that never overstays its welcome. 987 people have weighed in on TMDB, and the verdict leans heavily positive. Watch it for Spencer Klein — stay for everyone else around them. Available now — press play and find out why people keep recommending it.

There is a reason Hey Arnold! Season 4 keeps coming up in conversation. The jokes in Hey Arnold! Season 4 land because the characters underneath them are worth caring about. Season 4 of Hey Arnold! Includes 31 episodes. It aired from March 1999 to December 1999. Spencer Klein and Francesca Marie Smith lead a cast that brings real weight to the material. It was aired in 1999. Hey Arnold! Season 4 earns its laughs from character rather than situation, which is why it does not wear thin the way pure farce tends to. The hit rate here is high enough that skipping ahead never feels like an option.

Hey Arnold! Season 4 is the kind of thing you put on in the background and end up fully watching. If you have run out of similar titles to watch, this is a strong next pick. The complete run is available and best experienced without too much prior knowledge of where it goes. Spencer Klein sets the tone, but the supporting cast is where a lot of the best moments come from. A reliable pick for any night you want quality comedy without the homework.

📡 Where to Watch Hey Arnold! Season 4

🇦🇺 Australia
🇺🇸 United States
🇬🇧 United Kingdom
🇨🇦 Canada
🇳🇿 New Zealand
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🎬 Hey Arnold! Season 4 — Episode Guide

E1
Full Moon
1999-03-10
Harold, Sid, and Stinky all moon Principal Wartz, but Arnold is blamed, even though he was just an innocent bystander.
E2
Student Teacher
1999-03-10
Helga's sister Olga comes home for spring break and becomes a classroom aid in Helga's class, much to Helga's chagrin.
E3
Big Gino
1999-03-15
After Sid works off a debt with loan shark Big Gino, the two become friends, but when Sid is told to give Arnold a swirlie, he has to choose between the two.
E4
Jamie O in Love
1999-03-15
Gerald's older brother Jamie O has a sudden burst of kindness when he finds a girlfriend, but Arnold and Gerald soon find out that the girl is just using Jamie O.
E5
Eugene's Birthday
1999-03-17
After losing Eugene's birthday party invitations, Arnold feels obliged to throw him another party, but it doesn't work out.
E6
Stinky's Pumpkin
1999-03-17
Stinky grows a huge pumpkin to enter in a city competition.
E7
The Beeper Queen
1999-03-29
After Bob pops his spine, Miriam runs Big Bob's Beepers. She gets in over her head and forgets about her family.
E8
Oskar Can't Read?
1999-03-29
Arnold finds out that Oskar is illiterate and tries to teach him to read.
E9
Dinner for Four
1999-03-31
Helga wants to show Arnold that she can be as sophisticated as Lila is by taking him, Gerald, and Phoebe out to dinner with a coupon she won. She devises a plan to get out of paying when she discovers they're at the wrong restaurant.
E10
Phoebe Skips
1999-03-31
Phoebe is promoted to the sixth grade, but realizes that her new so-called "friends" are just using her to do their homework.
E11
Helga's Parrot
1999-04-05
A sleep-talking Helga confides into Bob's parrot about her love for Arnold. The next day, the parrot flies into Arnold's window, and it is up to Helga to get it.
E12
Chocolate Turtles
1999-04-05
Crisis strikes when Gerald's little sister, Timberly, eats a stock of chocolate turtles that he and Arnold are supposed to sell for a local scout organization.
E13
Love and Cheese
1999-04-07
Helga tries to separate Arnold from Lila while at the annual Cheese Fair.
E14
Weighing Harold
1999-04-07
Harold, after discovering his friends think he is obese, decides to go on a weight-loss cruise. When he comes back, though, he is noticeably larger.
E15
Back to School
1999-09-11
After Grandpa tells Arnold that he never got his grade school diploma, Arnold convinces him to come to go back to school at P.S. 118.
E16
Egg Story
1999-09-11
Arnold and Helga must care for an egg for a school project about parenting. Meanwhile, Rhonda and Harold are project partners and must also take care of an egg.
E17
It Girl
1999-09-18
Helga becomes a model, but she quits after she gets irritated at everyone dressing like her.
E18
Deconstructing Arnold
1999-09-18
Arnold's classmates are tired of constantly telling them the right thing to do, so he stops giving them advice. Nevertheless, when his classmates get into sticky situations, they are in desperate need of his advice.
E19
Grudge Match
1999-09-25
After getting in a car accident, Bob and Grandpa face off on the golf green, with the loser having to pay for the damage to both cars.
E20
Polishing Rhonda
1999-09-25
Rhonda attends a finishing school, but is far from impressive with her stroppy attitude, and seeks help from fellow student Big Patty.

🎭 Cast of Hey Arnold! Season 4

Spencer Klein
Spencer Klein
Arnold (voice)
Francesca Marie Smith
Francesca Marie Smith
Helga Pataki (voice)
Jamil Walker Smith
Jamil Walker Smith
Gerald Johanssen (voice)
Justin Shenkarow
Justin Shenkarow
Harold Berman (voice)
Dan Castellaneta
Dan Castellaneta
Grandpa Phil (voice)
CW
Christopher Walberg
Stinky Peterson (voice)

📋 All Seasons of Hey Arnold!

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