A list of pre-established Sesame Street characters who have made cameo appearances in episodes of Elmo's World, often in the form of an interview, home video, video e-Mail or quiz.
Abby Cadabby
Baby Bear
- Elmo's World: Drawing
- Elmo's World: Hands
- Elmo's World: Firefighters
- Elmo's World: Bells
- Elmo's World: Friends
- Elmo's World: Helping
- Elmo's World: Drums
Bert
- Elmo's World: Hair
- Elmo's World: Birds
- Elmo's World: Sleep
- Elmo's World: Skin
- Elmo's World: Friends
- Elmo's World: Drums
- Elmo's World: Eyes
- The Street We Live On
Big Bird
- Elmo's World: Music
- Elmo's World: Transportation
- Elmo's World: Singing (with Radar)
- Elmo's World: Birds
- Elmo's World: Mail
- Elmo's World: Skin
- Elmo's World: Cameras
- Elmo's World: Penguins
- Elmo's World: Doctors (with Radar)
- Elmo's World: Friends
- The Street We Live On
Cookie Monster
- Elmo's World: Food
- Elmo's World: Sleep
- Elmo's World: Mail
- Elmo's World: Ears
- Elmo's World: Friends
- Elmo's World: Mouths
- The Street We Live On
Count von Count
- Elmo's World: Books
- Elmo's World: Teeth
- Elmo's World: Weather
- Elmo's World: Jumping
- Elmo's World: Friends
- Elmo's World: The Beach
- The Street We Live On
Ernie
- Elmo's World: Transportation
- Elmo's World: Singing (with Rubber Duckie)
- Elmo's World: Bugs
- Elmo's World: Games (with Rubber Duckie)
- Elmo's World: Sleep
- Elmo's World: Getting Dressed (with Rubber Duckie)
- Elmo's World: Bath Time
- Elmo's World: Bells
- Elmo's World: Dinosaurs (with Rubber Duckie)
- Elmo's World: Skin
- Elmo's World: Friends
- Elmo's World: Drums
- Elmo's World: Eyes
- The Street We Live On
Grover
- Elmo's World: Hats (as Super Grover)
- Elmo's World: Food (as Waiter Grover)
- Elmo's World: Bicycles (as Super Grover)
- Elmo's World: Open and Close (as Super Grover)
- Elmo's World: Up and Down (as Super Grover)
- Elmo's World: Families (as Super Grover)
- Elmo's World: Penguins
- Elmo's World: Horses (as Marshal Grover with Fred the Wonder Horse)
- Elmo's World: Friends
- Elmo's World: Helping (as Super Grover)
- Elmo's World: Frogs
- The Street We Live On
Herry Monster
Honkers
Humphrey, Ingrid and Baby Natasha
Oscar the Grouch
- Elmo's World: Farms
- Elmo's World: Shoes
- Elmo's World: Music
- Elmo's World: Computers
- Elmo's World: Birthdays
- Elmo's World: Weather (with Fluffy)
- Elmo's World: Firefighters
- Elmo's World: Wild Animals (with Fluffy)
- Elmo's World: Open and Close
- Elmo's World: Building Things
- Elmo's World: The Beach
- Elmo's World: Noses
- Elmo's World: Helping
- Elmo's World: Eyes
- The Street We Live On
Prairie Dawn
Rosita
- Elmo's World: Farms
- Elmo's World: Computers
- Elmo's World: Hands
- Elmo's World: Building Things
- Elmo's World: Friends
- Elmo's World: Violins
- The Street We Live On
Slimey the Worm
- Elmo's World: Flowers, Plants & Trees
- Elmo's World: Sky
- Elmo's World: Getting Dressed
- Elmo's World: School (with classmates)
- Elmo's World: Fast and Slow
- The Street We Live On
Mr. Snuffleupagus
- Elmo's World: Shoes
- Elmo's World: Babies
- Elmo's World: Up and Down
- Elmo's World: Dinosaurs
- Elmo's World: School (with Rosalyn)
- Elmo's World: Building Things
- Elmo's World: Horses
- Elmo's World: Friends
- Elmo's World: Drums
- The Street We Live On
Stinky the Stinkweed
- Elmo's World: Flowers, Plants & Trees
- Elmo's World: Games
- Elmo's World: Friends
- Elmo's World: Mouths
Telly Monster
- Elmo's World: Balls
- Elmo's World: Water
- Elmo's World: Computers
- Elmo's World: Pets (with Chuckie Sue)
- Elmo's World: Hands
- Elmo's World: Fish
- Elmo's World: Building Things
- Elmo's World: Friends
- Elmo's World: Farms
- The Street We Live On
Zoe
- Elmo's World: Dancing
- Elmo's World: Bicycles
- Elmo's World: Jumping
- Elmo's World: Doctors (with Rocco)
- Elmo's World: Friends
- The Street We Live On
Additional Characters
- Barkley (Elmo's World: Pets, Elmo's World: Cats)
- Benny Rabbit (Elmo's World: Hats, Elmo's World: Teeth)
- Big Bad Wolf (green) (Elmo's World: Firefighters)
- Big Bad Wolf (purple) (Elmo's World: Wild Animals)
- Chicken (Elmo's World: Helping)
- Cyranose de Bergerac (Elmo's World: Noses)
- Dinger (Elmo's World: Bells)
- The Elephant (Elmo's World: Wild Animals, Elmo's World: Up and Down)
- Kermit the Frog (Elmo's World: Frogs)
- Super Grover's Mommy (Elmo's World: Families)
- Mama Bear (Elmo's World: Families)
- Mr. Johnson (Elmo's World: Food)
- Papa Bear (Elmo's World: Families, Elmo's World: Helping)
- Shelley the Turtle (Elmo's World: Hair)
- Two-Headed Monster (Elmo's World: Jackets, Elmo's World: Noses)
- Wolfgang the Seal (Elmo's World: Wild Animals, Elmo's World: Noses)
- Narf, Googel, and more in The Street We Live On