Warner Bros.' Justice League lasted a total of five seasons, running from 2001 to 2006. The first two seasons consisted of a half-hour show called JUSTICE LEAGUE, with each story usually spanning two episodes. The title was changed to JUSTICE LEAGUE UNLIMITED with the third season, with most epsiodes featuring single-part stories. The Justice League also crossed over into the STATIC SHOCK! cartoon during this period, in the two-part story entitled "A League Of Their Own" (airing March 1st & 8th, 2003).

The Justice League series takes place in the same continuity as SUPERMAN: THE ANIMATED SERIES and BATMAN: THE ANIMATED SERIES.

Season One

101. "Secret Origins, Part 1"
First aired: 17 November 2001"
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102. "Secret Origins, Part 2"
First aired: 17 November 2001"
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103. "Secret Origins, Part 3"
First aired: 17 November 2001"
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104. "In Blackest Night, Part 1"
First aired: 19 November 2001"
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105. "In Blackest Night, Part 2"
First aired: 26 November 2001"
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106. "The Enemy Below, Part 1"
First aired: 03 December 2001"
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107. "The Enemy Below, Part 2"
First aired: 10 December 2001"
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108. "Paradise Lost, Part 1"
First aired: 21 January 2002"
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109. "Paradise Lost, Part 2"
First aired: 28 January 2002"
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110. "War World, Part 1"
First aired: 24 February 2002"
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111. "War World, Part 2"
First aired: 03 March 2002"
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112. "The Brave And The Bold, Part 1"
First aired: 10 March 2002"
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113. "The Brave And The Bold, Part 2"
First aired: 17 March 2002"
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114. "Fury, Part 1"
First aired: 07 April 2002"
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115. "Fury, Part 2"
First aired: 14 April 2002"
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116. "Legends, Part 1"
First aired: 21 April 2002"
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117. "Legends, Part 2"
First aired: 28 April 2002"
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118. "Injustice For All, Part 1"
First aired: 06 September 2002"
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119. "Injustice For All, Part 2"
First aired: 13 September 2002"
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120. "A Knight Of Shadows, Part 1"
First aired: 20 September 2002"
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121. "A Knight Of Shadows, Part 2"
First aired: 27 September 2002"
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122. "Metamorphosis, Part 1"
First aired: 04 October 2002"
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123. "Metamorphosis, Part 2"
First aired: 11 October 2002"
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124. "The Savage Time, Part 1"
First aired: 09 November 2002"
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125. "The Savage Time, Part 2"
First aired: 09 November 2002"
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126. "The Savage Time, Part 3"
First aired: 09 November 2002"
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Season Two

201. "Twilight, Part 1"
First aired: 05 July 2003"
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202. "Twilight, Part 2"
First aired: 05 July 2003"
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203. "Tabula Rasa, Part 1"
First aired: 04 October 2003"
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204. "Tabula Rasa, Part 2"
First aired: 04 October 2003"
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205. "Only A Dream, Part 1"
First aired: 11 October 2003"
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206. "Only A Dream, Part 2"
First aired: 11 October 2003"
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207. "Maid Of Honor, Part 1"
First aired: 18 October 2003"
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208. "Maid Of Honor, Part 2"
First aired: 18 October 2003"
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209. "Hearts And Minds, Part 1"
First aired: 25 October 2003"
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210. "Hearts And Minds, Part 2"
First aired: 25 October 2003"
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211. "A Better World, Part 1"
First aired: 01 November 2003"
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212. "A Better World, Part 2"
First aired: 01 November 2003"
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213. "Eclipsed, Part 1"
First aired: 08 November 2003"
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214. "Eclipsed, Part 2"
First aired: 08 November 2003"
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215. "The Terror Beyond, Part 1"
First aired: 15 November 2003"
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216. "The Terror Beyond, Part 2"
First aired: 15 November 2003"
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217. "Secret Society, Part 1"
First aired: 22 November 2003"
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218. "Secret Society, Part 2"
First aired: 22 November 2003"
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219. "Hereafter, Part 1"
First aired: 29 November 2003"
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220. "Hereafter, Part 2"
First aired: 29 November 2003"
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221. "Wild Cards, Part 1"
First aired: 06 December 2003"
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222. "Wild Cards, Part 2"
First aired: 06 December 2003"
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223. "Comfort And Joy"
First aired: 13 December 2003"
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224. "Starcrossed, Part 1"
First aired: 29 May 2004"
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225. "Starcrossed, Part 2"
First aired: 29 May 2004"
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226. "Starcrossed, Part 3"
First aired: 29 May 2004"
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Season Three

301. "Initiation"
First aired: 31 July 2004"
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302. "For The Man Who Has Everything"
First aired: 07 August 2004"
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303. "Kid Stuff"
First aired: 14 August 2004"
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304. "Hawk And Dove"
First aired: 21 August 2004"
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305. "This Little Piggy"
First aired: 28 August 2004"
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306. "Fearful Symmetry"
First aired: 04 September 2004"
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307. "The Greatest Story Never Told"
First aired: 11 September 2004"
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308. "The Return"
First aired: 18 September 2004"
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309. "Ultimatum"
First aired: 04 December 2004"
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310. "Dark Heart"
First aired: 11 December 2004"
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311. "Wake The Dead"
First aired: 18 December 2004"
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312. "The Once And Future Thing, Part 1: Weird Western Tales"
First aired: 22 January 2005"
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313. "The Once And Future Thing, Part 2: Time Warped"
First aired: 29 January 2005"
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Season Four

401. "The Cat And The Canary"
First aired: 05 February 2005"
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402. "The Ties That Bind"
First aired: 12 February 2005"
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403. "The Doomsday Sanction"
First aired: 19 February 2005"
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404. "Task Force X"
First aired: 21 May 2005"
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405. "The Balance"
First aired: 28 May 2005"
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406. "Double Date"
First aired: 04 June 2005"
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407. "Clash"
First aired: 11 June 2005"
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408. "Hunter's Moon"
First aired: 18 June 2005"
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409. "Question Authority"
First aired: 25 June 2005"
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410. "Flashpoint"
First aired: 02 July 2005"
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411. "Panic In The Sky"
First aired: 09 July 2005"
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412. "Divided We Fall"
First aired: 16 July 2005"
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413. "Epilogue"
First aired: 23 July 2005"
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Season Five

501. "I Am Legion"
First aired: 17 September 2005"
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502. "Shadow Of The Hawk"
First aired: 17 September 2005"
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503. "Chaos At The Earth's Core"
First aired: 24 September 2005"
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504. "To Another Shore"
First aired: 24 September 2005"
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505. "Flash and Substance"
First aired: 11 February 2006"
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506. "Dead Reckoning"
First aired: 18 February 2006"
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507. "Patriot Act"
First aired: 25 February 2006"
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508. "The Great Brain Robbery"
First aired: 04 March 2006"
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509. "Grudge Match"
First aired: 11 March 2006"
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510. "Far From Home"
First aired: 15 April 2006"
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511. "Ancient History"
First aired: 29 April 2006"
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512. "Alive! (Part 1)"
First aired: 06 May 2006"
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513. "Destroyer (Part 2)"
First aired: 13 May 2006"
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