2003

All events that happened in 2003.

January

 * 5th: "Special Edna" aired for the first time.
 * 12th: "The Dad Who Knew Too Little" aired for the first time.

February

 * 2nd: "The Strong Arms of the Ma" aired for the first time.
 * 9th: "Pray Anything" aired for the first time.
 * 16th: "Barting Over" aired for the first time. "I'm Spelling As Fast As I Can" aired for the first time.

March

 * 2nd: "A Star Is Born Again" aired for the first time.
 * 9th: "Mr. Spritz Goes to Washington" aired for the first time.
 * 16th: "C.E. D'oh" aired for the first time.
 * 30th: "'Scuse Me While I Miss the Sky" aired for the first time.

April

 * 7th: The Simpsons Risky Business was released on DVD and VHS.
 * 13th: "Three Gays of the Condo" aired for the first time.
 * 27th: "Dude, Where's My Ranch?" aired for the first time.

May

 * 4th: "Old Yeller-Belly" aired for the first time.
 * 11th: "Brake My Wife, Please" aired for the first time.
 * 18th: "The Bart of War" aired for the first time. "Moe Baby Blues" aired for the first time. Season 14 finished.

June

 * 12th: Gregory Peck, actor and guest star, died.
 * 27th: The Simpsons Road Rage was released on the for the United States.
 * 30th: The Simpsons Road Rage was released on the for the United Kingdom.

July

 * 4th: Barry White, a singer and guest star, died.
 * 27th: Bob Hope, a comedian, actor and guest star, died.

August

 * 26th: The Complete Third Season is released on DVD for the United States.

September

 * 8th: Bart Wars - The Simpsons Strike Back was released on DVD for the United Kingdom. The Dark Secrets of the Simpsons was released on DVD  for the United Kingdom. The Simpsons: Greatest Hits was released on DVD for the United Kingdom. The Simpsons: Go To Hollywood was released on DVD for the United Kingdom. The Simpsons: Too Hot For TV was released on DVD  for the United Kingdom.
 * 12th: Johnny Cash, a singer and guest star, died.
 * 16th: ''The Simpsons: Hit & Run was released for the, and  in North America.
 * 25th: George Plimpton, a journalist and guest star, died.

October

 * 6th: The Complete Third Season is released on DVD for the United Kingdom.
 * 14th: Christmas With the Simpsons was released on VHS and DVD for the United States.
 * 22nd: The Complete Third Season is released on DVD for Australia.
 * 26th: Ted Bemiller, an animation camera operator, died.
 * 31st: The Simpsons: Hit & Run was released for the, and  in Australia.

November

 * 2nd: Season 15 started. "Treehouse of Horror XIV" aired for the first time.
 * 3rd: Christmas With the Simpsons was released on VHS and DVD for the United Kingdom.
 * 9th: "My Mother the Carjacker" aired for the first time.
 * 13th: The Simpsons: Hit & Run was released for in North America.
 * 16th: "The President Wore Pearls" aired for the first time.
 * 21st: The Simpsons: Hit & Run was released for in Australia.
 * 23rd: "The Regina Monologues" aired for the first time.
 * 30th: "The Fat and the Furriest" aired for the first time.

December

 * 3rd: Christmas With the Simpsons was released on VHS and DVD for Australia.
 * 7th: "Today I Am a Clown" aired for the first time.
 * 14th: "'Tis the Fifteenth Season" aired for the first time.
 * 25th: The Simpsons: Hit & Run was released for the, and  in Japan.