Den femtende sæson af tv-serien The Simpsons blev første gang sendt i 2003 og 2004.
Afsnit
Treehouse of Horror XIV
My Mother the Carjacker
The President Wore Pearls
The Regina Monologues
The Fat and the Furriest
Today, I Am a Clown
'Tis the Fiftheenth Season
Marge vs. Singles, Seniors, Childless Couples and Teens, and Gays
I, (annoyed grunt)-bot
Diatribe of a Mad Housewife
Margical History Tour
Milhouse Doesn't Live Here Anymore
Smart And Smarter
The Ziff Who Came to Dinner
Co-Dependence Day
The Wandering Juvie
My Big Fat Geek Wedding
Catch 'em if You Can
Simple Simpson
The Way We Weren't
Bart-Mangled Banner
Fraudcast News
15