Kings

• The Alligator King
• King Arthur
• Cookie Monster as "King Cookie" in Sesame Street episode 4075
• King Derwin
• The Elvises call themselves "the King"
• Ernie imagined himself as a king in Imagine... Ernie Is King, and once played Old King Cole on Sesame Street. He also appears as a caveperson king in a sketch which was adapted into a book.
• King Fred Charming
• King Gnu
• King Goodheart
• King Goshposh
• Grover once played the King of Siam on "Monsterpiece Theater"
• Gunge, and later Philo, are hailed as the lost king of the Doozers in "Gunge the Great and Glorious"
• The Hypocritic Oaf played a king on The Jim Henson Hour
• Jareth, the Goblin King
• Kermit the Frog as King Midas and the "Rumpelstiltskin" king in Muppet Classic Theater
• Kermit as the King of Spades, Hearts, Clubs and Diamonds in a deck of playing cards
• Kermit, Prince of Denmark
• King of 8
• The King of Id
• The King of Quilts from A My Name Is Annabel
• The King of Phumph
• Link Hogthrob as the King of Hearts in The Muppet Show Episode 506
• King Gerry the Generous
• King Kenny the Kind
• King Oliver
• King Peter the Persnickety
• King Ploobis
• King Richard the Chicken-Hearted
• King Rupert the First
• King Rupert the Second
• Kings (The StoryTeller)
• The Monkey King
• Pa Gorg
• Pferd appeared as a king in an episode of Sesamstrasse
• Rowlf as the king in the jousting scene from episode 305 of The Muppet Show

Emperors

• Anything Monsters as First Emperor and Last Emperor on Sesame Street
• The Emperor of Lilliput in Gulliver's Travels
• Fozzie Bear as the Emperor in Muppet Classic Theater
• Skeksis Emperor
• Moo-Ing, emperor of Lactosia

Queens

• Aunt Myrtle
• Queen Esmerelda
• Ma Gorg
• Meteora, Queen of the Asteroids
• Queen Peuta
• Miss Piggy as Cleopatra on The Muppet Show in Episode 409
• Miss Piggy as the Queen of Hearts on The Muppet Show in Episode 506
• Miss Piggy as Queen Midas in Muppet Classic Theater
• Piggy as the Queen of Spades, Hearts, Clubs and Diamonds in a deck of playing cards
• Pearl Bailey as Queen Guenevere on The Muppet Show in Episode 305
• The Queen
• The Queen of Arabia
• The Queen of France
• The Queen of Phumph
• Queen of 6
• Queen of Trash
• Queen of Quilts from A My Name Is Annabel
• Queen Olivia
• Queen Quinella
• Queen Yellow

Princes

• Junior Gorg
• The Artist Formerly Known as Prince guest-starred on Muppets Tonight
• Prince Arthur Charming
• Prince Charming
• Prince Firstly
• Prince Leo in The StoryTeller episode "The Heartless Giant"
• The Prince of Phumph
• Prince the Dog
• Sir Robin the Brave

Princesses

• Princess Azalea
• Princess Charming in CinderElmo
• Daffodil
• Merlin's Assistant
• Princess Geraldine
• Princess Gwendolinda
• Princess Katie
• Princess Lulabelle
• Princess Melora
• Princess Mindy
• Princess Penelope
• Princess Vendela
• The Princess and the Pea
• The Princess (Humpty Dumpty)
• The Princess (Dicky Birds)
• Miss Piggy as Princess Leia
• Miss Piggy as Princess Diana

Miscellaneous Sovereigns

• Dominar Rygel XVI
• The Swedish Chef as the Caliph in The Muppet Show Episode 518
• The Tsar of Russia in "The Soldier and Death"

Aristocracy

• Baron Purpura
• Baron Von Rottweiler
• Count von Count
• Countess Dahling von Dahling
• Countess von Backwards
• The Duchess
• Duke of York
• Elmo as "Lord Elmo" in A New Baby in My House
• Lady Holiday
• Lady Two
• Lord Hog

Knights

• Sir Arthur Conan Rubberducque
• Sir Blunderbrain
• Sir David Tushingham
• Sir Didymus
• Ernie imagines that he is Sir Ernie in the song "Imagine That."
• Sir Linit

Real World Nobility

• Princess Anne
• Sir Bob Hope
• Sir Derek Jacobi
• Sir Elton John
• Sir John Gielgud
• Sir Michael Caine
• Sir Michael Hordern
• Sir Peter Ustinov
• Sir Roger Moore
• Sir Spike Milligan
• Dame Cleo Laine
• Dame Helen Mirren
• Dame Julie Andrews
• Dame Shirley Bassey
• Lord Lew Grade
• Queen Elizabeth II
• John Standing, 4th Baronet Leon