I originally listed these shows under animated series, but eventually decided to move them to their own category, partly because I like CGI and thought they deserved to be listed separately, and partly to free up a little bit of space in the other category. I'll include series here that have elements of both CGI and traditional animation (as long as the CGI is obvious), but most of the shows are pure CGI. I'll include anime, or CGI cartoons from any country. I'll also list CGI specials and TV movies. Hopefully I won't neglect to include anything that's at least partially CGI, but I might.
See also CGI webseries, CGI movies, and CGI short films
Cars Toons
Descendants: Wicked World
The Drinky Crow Show
IGPX (only partially CGI)
Iron Man: Armored Adventures
Lucy, the Daughter of the Devil
Miraculous: Tales of Ladybug & Cat Noir
The New Adventures of Peter Pan
Ronja, the Robber's Daughter
Star Wars: The Clone Wars
Tripping the Rift
ZOMBIES: The Re-Animated Series