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- Margaret Hamilton
- Herbie Hancock showing off the Fairlight Synthesizer
- Kadeem Hardison
- Mariska Hargitay explaining the word "mystery"
- The Harlem Globetrotters
- Neil Patrick Harris appeared as the "Fairy Shoe Person"
- Deborah Harry lead singer of New Wave band Blondie
- Elisabeth Hasselbeck
- Tony Hawk counts the number of wheels on a skateboard
- Max Headroom
- Keith Hernandez appeared in Put Down The Duckie
- Katherine Heigl
- Faith Hill singing about sharing with her husband, Tim McGraw
- Jonah Hill appeared wearing a fake mustache, which he gave to Elmo
- Gregory Hines, and his brother Maurice
- Hootie and the Blowfish singing about crossing the street
- Lena Horne
- Marilyn Horne
- Ron Howard
- Lillian Hurst
- Anne Hathaway
Read more about this topic: List Of Guest Stars On Sesame Street