Action TV shows premiered in 2003

NCIS (2003-)
The Venture Bros. (2003-2018)
Red vs. Blue (2003-2024)
Battlestar Galactica (2003-2003)
Teenage Mutant Ninja Turtles (2003-2010)
Most Extreme Elimination Challenge (2003-2007)
Teen Titans (2003-2006)
Fullmetal Alchemist (2003-2004)
Original title: 鋼の錬金術師
Star Wars: Clone Wars (2003-2005)
Duck Dodgers (2003-2005)
The Animatrix (2003-2003)
Danny Phantom (2003-2007)
Xiaolin Showdown (2003-2006)
The Valley of The Wolves (2003-2005)
Original title: Kurtlar Vadisi
Lilo & Stitch: The Series (2003-2006)
Kingpin (2003-2003)
Tutenstein (2003-2007)
Gungrave (2003-2004)
Original title: ガングレイヴ
Hatim (2003-2004)
Spider-Man (2003-2003)
Original title: Spider-Man: The New Animated Series
Peacemakers (2003-2003)
Wolf's Rain (2003-2004)
Power Rangers Ninja Storm (2003-2004)
Last Exile (2003-2003)
Original title: LAST EXILE
Kamen Rider 555 (2003-2004)
Original title: 仮面ライダー555
Tremors (2003-2003)
Demi-Gods and Semi-Devils (2003-2003)
Original title: 天龙八部
Time Commanders (2003-2016)
Code Lyoko (2003-2007)
Evil Con Carne (2003-2004)
Martin Mystery (2003-2006)
Hunter x Hunter: Greed Island (2003-2003)
Helen of Troy (2003-2003)
Dirty Sanchez (2003-2008)
Tarzan (2003-2003)
Zatch Bell! (2003-2013)
Original title: 金色のガッシュベル!!
Black Sash (2003-2003)
All In (2003-2003)
Gunslinger Girl (2003-2004)
Pirate Islands (2003-2003)
All Grown Up! (2003-2008)
Chouseishin Gransazer (2003-2004)
Original title: Chôseijin Guranseizâ
Sonic X (2003-2006)
Original title: ソニックX
Chrono Crusade (2003-2004)
Bobobo-bo Bo-bobo (2003-2005)
Sabrina's Secret Life (2003-2004)
Danger Rangers (2003-2008)
Pretty Guardian Sailor Moon (2003-2004)
Original title: Bishôjo Senshi Sailor Moon
Ninja Scroll: The Series (2003-2003)
Original title: Jûbê ninpûchô: Ryûhôgyoku-hen
Al Hajjaj (2003-2003)
Stripperella (2003-2004)
Hem till Midgård (2003-2004)
The Last Chapter: The War Continues (2003-)
Funky Cops (2003-2004)
The Save-Ums! (2003-2006)
Astro Boy (2003-2004)
Original title: ASTROBOY 鉄腕アトム
Bounty Hamster (2003-2004)
Damo (2003-2003)
The Legend of the Condor Heroes (2003-)
Original title: She diao ying xiong zhuan
Kung Faux (2003-)
R.O.D the TV (2003-2004)
Bakuryu Sentai Abaranger (2003-2004)
Original title: 爆竜戦隊アバレンジャー
Ikki Tousen (2003-2014)
Original title: 一騎当千
Lunar Legend Tsukihime (2003-2003)
Original title: Shingetsutan tsukihime
Computerman (2003-2004)
Smallville: Chloe Chronicles (2003-2006)
Freaky (2003-2003)
New Fist of the North Star (2003-2004)
Original title: Shin Hokuto no Ken
Sleep and Awake (2003-2003)
Original title: Khab o Bidar
Fala zbrodni (2003-2008)
Air Master (2003-2004)
Blame! (2003-2003)
Parasite Dolls (2003-2003)
Original title: Parasaito Dôruzu
Mezzo DSA (2003-2004)
The Tai Chi Master (2003-)
Original title: Tai chi zong shi
Flying Daggers (2003-)
Original title: Fei dao you jian fei dao
F-Zero GP Legend (2003-2005)
Godannar!! (2003-2004)
Original title: Shinkon gattai Godannar!!
Peace Maker Kurogane (2003-2004)
Stratos 4 (2003-2003)
Mouse (2003-2003)
Gunparade March (2003-)
Original title: Ganparêdo mâchî: Aratanaru kôgun uta
In the Service of My Country (2003-)
Original title: Rodina zhdyot
Zoids: Fuzors (2003-2005)
Original title: Zoids Fuzors
Empress Wu Mei Niang (2003-)
Original title: Zhi zun hong yan
Bonus Stage (2003-2024)
Sky High (2003-)
Original title: Sukai hai
Kid Paddle (2003-2009)
Avenger (2003-)
International Moron Patrol (2003-)
Sonic Movie Madness (2003-2005)
3 Wild Angels (2003-2005)
Original title: Wilde Engel
Princess Natasha (2003-2007)
Cinderella Boy (2003-)
Russians in the City of Angels (2003-2003)
Original title: Russkie v Gorode Angelov
Ladrón de Corazones (2003-)
Les aventures tumultueuses de Jack Carter (2003-2003)
Submarine Super 99 (2003-2003)
Muhtar's Return (2003-)
Original title: Vozvrashchenie Mukhtara
Alarm für Cobra 11 - Einsatz für Team 2 (2003-2015)
Joe vs. Joe (2003-2003)
Original title: Futari no Joe
The Legend of the Condor Heroes (2003-)
Original title: 射雕英雄传
Scent of a Man (2003-)
Original title: Namjaui hyanggi
Kidô shinsengumi: Moe yo ken (2003-)
Nyi Roro Kidul (2003-2003)
Záchranári (2003-)
Hekimoğlu (2003-2003)
Saint Beast (2003-)
Syschik bez litsenzii (2003-2003)
Tank Knight Fortress (2003-)
Código fuego (2003-)
Triangle Heart: Sweet Songs Forever (2003-2003)