USA
The adventures of a daydreaming, jazz-loving, football-headed 9-year-old, who lives in a boarding house with his grandparents and some eccentric boarders; encounters life in the city with his best friend Gerald, a loofah-haired kid who is the keeper of the urban tales and coolest kid in class; and is tormented by Helga, who loves him secretly. - IMDb
| Arnold (transliterated title) |  Greece |
| Arnoldovy patálie |  Czechoslovakia |
| Ei Arnold! |  Brazil |
| Hé Arnold! (dubbed version) |  France |
| Hé, Arnold! |  Hungary |
| Hej Arnold! |  Poland |
| Hej, Arnolde! |  Serbia |
| Hey Arnold! |  United Kingdom |
| Hey Arnold! |  Indonesia |
| Hey Arnold! |  India |
| Hey Arnold! |  South Korea |
| Hey Arnold! |  Netherlands |
| Hey Arnold! |  Philippines |
| Hey Arnold! |  Singapore |
| Hey Arnold! | USA |
| Hey Arnold! |  South Africa |
| Hey Arnold! |  United Arab Emirates |
| Hey Arnold! |  Australia |
| Hey Arnold! |  Belgium |
| Hey Arnold! | Brazil |
| Hey Arnold! |  Canada |
| Hey Arnold! | Canada |
| Hey Arnold! |  West Germany |
| Hey Arnold! |  Ecuador |
| Hey, Arnold! |  Italy |
| Hey, Arnold! |  Turkey |
| Hey, Arnold! (alternative spelling) | USA |
| Oye Arnold! |  Argentina |
| Oye Arnold! |  Peru |
| ¡Oye Arnold! |  Mexico |
| ¡Oye, Arnold! |  Spain |
| Гей, Арнольде! |  Ukraine |
| Эй, Арнольд! |  Russia |
| ヘイ・アーノルド! |  Japan |
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Haley Joel Osment [11] | Curly Gammelthorpe (TV Episode: It Girl/Deconstructing Arnold) (1999) |
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Alex D. Linz [13] | Arnold (TV Episode: April Fool's Day) (2002) |
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Miko Hughes [16] | Alan Redmond (TV Episode: Harold vs. Patty/Rich Guy) (2002) |
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Blake McIver Ewing [16] | Eugene Horowitz (TV Episode: Stuck in a Tree/Rhonda Goes Broke) (2001) |
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Cameron Van Hoy [14] | 'Big' Gino (TV Episode: Big Gino/Jamie O in Love) (1999) |
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Grant Hoover [14] | Arnie (TV Episode: Weird Cousin/Baby Oskar) (1999) |
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Jer Adrianne Lelliott [16] | Eugene Follower Kid (TV Episode: Eugene Goes Bad/What's Opera, Arnold?) (1998) |
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Jeremy Suarez [12] | Scared Boy (TV Episode: The Journal) (2002) |
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Jordan Warkol [11] | Chocolate Boy / Jamie (TV Episode: Eugene's Birthday/Stinky's Pumpkin) (1997) |
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Joseph Ashton [12] | Iggy (TV Episode: Arnold Betrays Iggy/Helga and the Nanny) (1998) |
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Kyle Gibson [16] | Gino's Assistants (TV Episode: Big Gino/Jamie O in Love) (1999) |
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Lacey Chabert [15] | Ruth P. McDougal (TV Episode: Arnold's Valentine) (1997) |
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Phillip Van Dyke [13] | Arnold / Ludwig / Sandy / ... (TV Episode: Summer Love) (1997) |
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Steven Hartman [13] | Curly Gammelthorpe (TV Episode: Downtown as Fruits/Eugene's Bike) (1996) |
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Jarrett Lennon [14] | Eugene Horowitz / Eugene Horrwitz (TV Episode: False Alarm/World Records) (1996) |
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Marcus Toji [12] | Park / 3rd Grade Kid / Iggy (TV Episode: Arnold's Hat/Stoop Kid) (1996) |
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Hari Oziol | Kid At Fair (TV Episode: Dangerous Lumber/Mr. Hyunh Goes Country) (1998) |
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Ashley Tesoro [14] | Older Girl on Bus (TV Episode: Eating Contest/Rhonda's Glasses) (1997) |
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Christopher Castile [16] | Eugene Horowitz (TV Episode: Runaway Float/Partners) (1996) |
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Anndi McAfee [17] | Phoebe Heyerdahl / Pet Shop Girl / Betty / ... (TV Episode: Phoebe's Little Problem/Grandpa's Packard) (1996) |
