These shorts made by Pixar have been released in different ways: theatrically, or as bonus features on home media, or online. Some are related to Pixar's feature films, and some are standalone works.

22 vs Earth
"Auntie Edna" (my review was lost)
"Bao" (my review was lost)
"The Blue Umbrella" (my review was lost)
Boundin'
"BURN-E" (my review was lost)
"Carl's Date" (my review was lost)
Ciao Alberto
"Dante's Lunch" (my review was lost)
"Day & Night" (my review was lost)
"Dug's Special Mission" (my review was lost)
For the Birds
Geri's Game
Jack-Jack Attack
Knick Knack
Lamp Life
"Lava" (my review was lost)
The Legend of Mor'du
Lifted
"Lou" (my review was lost)
La Luna
Luxo Jr.
Mater and the Ghostlight
Mike's New Car
One Man Band
"Partly Cloudy" (my review was lost)
Party Central
"Piper" (my review was lost)
"Presto" (my review was lost)
"Riley's First Date" (my review was lost)
Sanjay's Super Team
Tin Toy
Your Friend the Rat

series
Cars Toons
Pixar Popcorn
Toy Story Toons