Goodnight Moon is a 1947 children's book by Margaret Wise Brown and illustrated by Clement Hurd. The book has remained in print and is recognized as a classic, describing a bunny child's bedtime routine of saying goodnight to every object he can see.
- The book has been read multiple times on Sesame Street.
- In episode 3267 (1994), Ruthie shows Goodnight Moon to Zoe as one of the books she might like to read in addition to The Very Quiet Cricket.
- In episode 3785 (1998), Oscar reads Slimey a different version of the book, including "Goodnight, mud."