The following is a list of animated films in the public domain in the United States for which there is a source to verify its status as public domain under the terms of U.S. copyright law. For more information, see List of films in the public domain in the United States. Films published before 1923 are not included; all such films are in the public domain. (Note that while the film in and of itself may be in the public domain, the original versions may incorporate elements that remain under separate copyright.)
Sources: Looney Tunes in the Public Domain at the Wayback Machine (archived March 26, 2016); and Film Superlist: Motion Pictures in the U.S. Public Domain.
90 Day Wondering
Ain't Nature Grand!
Ali-Baba Bound (1940)
All This and Rabbit Stew (1941)
Any Bonds Today?
Bars and Stripes Forever (1939)
Battling Bosko
Big-Hearted Bosko
Big Man from the North
Booby Traps
Boom Boom
Booze Hangs High, The
Bosko and Bruno
Bosko and Honey
Bosko at the Beach
Bosko at the Zoo
Bosko Shipwrecked!
Bosko the Doughboy
Bosko the Lumberjack
Bosko the Talk-Ink Kid
Bosko's Dog Race
Bosko's Fox Hunt
Bosko's Holiday
Bosko's Party
Bosko's Soda Fountain
Bosko's Store
Box Car Blues
Case of the Missing Hare (1942)
Confusions of a Nutzy Spy (1943)
Censored
Chow Hound, The
Coming! Snafu!
Congo Jazz
Corny Concerto, A (1943)
Coy Decoy, A (1941)
Crosby, Columbo, and Vallee
Daffy - The Commando (1943)
Daffy Duck and the Dinosaur (1939)
Daffy Duckaroo, The (1942)
Daffy's Southern Exposure (1942)
Day at the Zoo, A (1939)
Ding Dog Daddy (1942)
Dover Boys at Pimento University (or The Rivals of Roquefort Hall), The (1942)
Drafty, Isn't It?
Ducktators, The (1942)
Dumb Partol
Early Worm Gets the Bird, The
Eatin' On The Cuff (or The Moth Who Came to Dinner) (1942)
Falling Hare (1943)
Farm Frolics (1941)
Fifth Column Mouse, The (1943)
Fighting Tools
Foney Fables (1942)
Fox Pop (1942)
Freddy the Freshman
Fresh Hare (1942)
Gas
Get Rich Quick Porky (1937)
Going Home
Gold Rush Daze (1939)
Goldbrick, The
Good Egg, The
Goopy Geer
Gopher Goofy
Great Big Bunch of You, A
Gripes
Hamateur Night (1939)
Haunted Mouse, The
Have You Got Any Castles? (1938)
Henpecked Duck, The (1941)
Hitch in Time, A
Hittin' the Trail for Hallelujah Land
Hobby Horse-Laffs (1942)
Hold Anything
Hollywood Capers (1935)
Hollywood Steps Out (1941)
Home Front, The
Hop and Go (1943)
Hot Spot
I Love a Parade
I Wanna Be a Sailor (1937)
I Wish I Had Wings
Impatient Patient, The (1942)
In the Aleutians
Infantry Blues, The
Inki and the Minah Bird (1943)
It's Got Me Again!
It's Murder She Says
Joe Glow the Firefly (1940)
Jungle Jitters (1938)
Lady, Play Your Mandolin!
Lecture On Camouflage, A
Meet John Doughboy (1941)
Moonlight for Two
No Buddy Atoll
Notes to You (1941)
Nutty News (1942)
One More Time
Operation: Snafu
Outpost
Pagan Moon
Pay Day
Pigs in a Polka (1943)
Point Rationing of Foods
Porky Pig's Feat (1943)
Porky's Ant
Porky's Bear Facts (1941)
Porky's Cafe (1942)
Porky's Garden
Porky's Last Stand
Porky's Midnight Matinee (1941)
Porky's Pastry Pirates
Porky's Pooch (1941)
Porky's Preview (1941)
Porky's Prize Pony
Porky's Railroad (1937)
Prest-O Change-O (1939)
Private Snafu Vs. Malaria Mike
Puss n' Booty (1943)
Queen Was in the Parlor, The
Red-Headed Baby
Return of Mr. Hook, The
Robin Hood Makes Good (1939)
Robinson Crusoe Jr.
Rookie Revue (1941)
Rumors
Saps in Chaps
Scrap Happy Daffy (1943)
Secrets of the Caribbean
Shanty Where Santy Claus Lives, The
Sheepish Wolf, The
Sinkin' in the Bathtub
Smile, Darn Ya, Smile!
Snafuperman
So Much for So Little
Spies
Sports Chumpions
Tale of Two Kitties, A (1942)
Target: Snafu
Three Brothers, The
Three's a Crowd
Timid Toreador, The (1940)
To Duck or Not to Duck (1943)
Tokio Jokio (1943)
Tokyo Woes
Tree's Knees, The
Ups 'N Downs
Wabbit Who Came to Supper, The (1942)
Wackiki Wabbit (1943)
Wacky Blackout (1942)
Wacky Wabbit, The (1942)
We, the Animals Squeak! (1941)
We're in the Money
Westward Whoa
Who's Who in the Zoo (1942)
Yankee Doodle Daffy (1943)
Yodeling Yokels
You Don't Know What You're Doin'!
You're Too Careless With Your Kisses
Source: The Walter Lantz Cartune Encyclopedia: List of Shorts in the Public Domain at the Wayback Machine (archived March 3, 2016)
All 1931-32 Disney Oswald reissues by Lantz, with the exception of All Wet
All 1943-44 stop-motion instructional films for the US Navy
All 1948-49 and 1953 Coca-Cola advertisements
All advertisements for Albers, Auto-Lite, Carnation, Interstate Bakeries Corporation, and Kellogg's
Amazing Recovery of Inbad the Ailer, The [industrial film for Saraka]
Bandmaster, The [1931]
Beach Combers
Blood is Needed [produced for the American Red Cross]
Boy Meets Dog [unreleased short for Ipana Toothpaste]
Enemy Bacteria, The [instructional film for US Navy]
Gremlin Mr. N'Tane [instructional film for US Armed Forces]
House of Magic
Making Good
Mechanical Man
Pantry Panic (1941)
Plumber, The
Quail Hunt, The
Scrub Me Mama with a Boogie Beat
Silly Superstition
Story of Human Energy, The [educational film for the Corn Products Refining Co.]
Take Heed Mr. Tojo [instructional film for US Navy with Mr. Hook]
A Date to Skate (1938)
Arctic Giant, The (1942)
Billion Dollar Limited (1942)
Bulleteers, The (1942)
Customers Wanted (1939)
Destruction Inc. (1942)
Electric Earthquake (1942)
Eleventh Hour (1942)
Gulliver's Travels (film)
I'm in the Army Now (1936)
I Never Changes My Altitude (1937)
Japoteurs (1942)
Jungle Drums (1943)
Little Swee'Pea (1936)
Magnetic Telescope, The (1942)
Mechanical Monsters, The (1941)
Me Musical Nephews (1942)
Mummy Strikes, The (1943)
Paneless Window Washer, The (1937)
Popeye the Sailor Meets Sindbad the Sailor (1936)
Secret Agent (1943)
Showdown (1942)
Superman (1941)
Terror on the Midway (1942)
Underground World, The (1943)
Volcano (1942)
Rudolph the Red-Nosed Reindeer (1964) Copyright status uncertain, see Rudolph the Red-Nosed Reindeer copyright issues