A ghost is the apparition of someone who has died. Popular culture has depicted a wide variety of ghosts associated with Halloween and works of fiction meant to be scary. Ghosts have been portrayed as genuinely frightening and gory to lighter depictions meant as fun or even friendly.
On The Muppet Show, a trio of ghosts appear in episode 119 telling ghost jokes backstage. They sang the Beatles' song "I'm Looking Through You" for the episode's UK Spot, and joined in the closing number, "You've Got a Friend." Designed in the tradition of cloth sheet with eyeholes and mouths cut out, they were filmed so as to seem transparent.
This particular style of ghost was rebuilt in 2011 and used in a short promo for The Muppets.  and later appeared in 2017 for The Muppets Take the Bowl performing the "Boo Danube." They did so again in 2018 for The Muppets Take the O2.
A different ghost puppet appeared in episode 307 of The Muppet Show, echoing the dance moves of Alice Cooper in "Welcome to My Nightmare" and Thog in "Once a Year Day." While this ghost also floated and was filmed so as to seem transparent, his appearance differed in that his body appeared to be wrapped like a mummy and he had two legs instead of no discernible lower half.
On Sesame Street, a ghost with more traditional Muppet eyes lives in Count von Count's castle. He shows up when Elmo comes to visit in Elmo Says BOO!, answering The Count's riddle, "what's a ghost's favorite dessert?": boooo-berry pie! An illustrated ghost appears in The Sesame Street Dictionary under the entry for "bowl."
- A non-articulated Ghost action figure, based on the first Muppet Show season model, was included as an accessory with the Uncle Deadly Action Figure. It included a clear base and stand to make the Ghost appear as if it were floating. Three different paint schemes were produced -- regular, clear, and glow-in-the-dark.
- Ceiling Ghost
- Chester Pugh
- Fughetta Faffner
- Jacob and Robert Marley
- The Ghost of Christmas Past
- The Ghost of Christmas Present
- The Ghost of Christmas Yet to Come
- John Stone