The following is a list of monster characters on Sesame Street, ordered alphabetically.

• Cookie Monster
• Deena Monster
• Dingers
• Elmo
• Frazzle
• Fuzzy-Face , Grover's predecessor
• Googel (Monster's Clubhouse)
• Grover
• Herry Monster
• Honkers
• Lulu
• Mel (Monster's Clubhouse)
• Narf (Monster's Clubhouse)
• Pearl Monster
• Phoebe (Monster's Clubhouse)
• Rosita
• Telly Monster
• The Two-Headed Monster
• Zoe