Free Web Backgrounds
Lots of backgrounds in several different categories! Backgrounds for all holidays and special occasions.

Backgrounds Archive
Database of high quality tilable backgrounds that can be searched by brightness, color, category and file size.

Art-Tlc: Animated Backgrounds
Includes lots of animated backgrounds for your web page.

Background City
Includes backgrounds in a number of categories, as well as several background themes. The themes include holidays, birthdays, sports, and more. Also allows you to view numerous colors of text over each background, a great way to help you decide what you like quickly.

Backgrounds by Carel
Lots of really nice, free backgrounds!

Texture Station
Some backgrounds for your web site.

Wonder Backgrounds
Includes numerous backgrounds in a variety of categories. Backgrounds for holidays, nature, patterns, birthdays, and more.