- Acting for Two:
- In addition to performing Kermit the Frog as usual, Jim Henson performs Garth the Frog and King Rupert the Second.
- Gawain the Frog and Robin the Frog are both performed by Frank Oz, with Jerry Nelson providing the latter character's voice. Nelson would later go on to perform Robin until his retirement in 2003.
- Jerry Nelson also performs Featherstone and Sweetums, with Carl Banas voicing the latter character.
- Kay the Frog and the voice of Taminella Grinderfall are both performed by Jerry Juhl.
- Directed by Cast Member: The Frog Prince was directed by Jim Henson, who portrayed Kermit, Garth and King Rupert the Second.
- Keep Circulating the Tapes: The special was released on VHS, Betamax and LaserDisc in 1983. It was again released on VHS in 1994. However, no DVD or Blu-ray release of this special has been announced.
- Real-Life Relative: Heather Henson, who played Prince Kermit, is the daughter of Jim Henson.
Trivia / Tales from Muppetland: The Frog Prince