• Jell-O, a brand name for gelatin desserts
• Sphyraena jello the pickhandle barracuda

People

• Jello Biafra, American lead singer and songwriter for the San Francisco punk rock band Dead Kennedys
• Green Jellÿ, the comedy heavy metal band originally named Green Jellö
• Darrell Fitton, an electronic musician from Manchester, England who has recorded under the names "Jello" and "Bola"

Language

• The Jell-O Belt, a colloquial geographical term in American English that references a clichéd Mormon overfondness for Jell-O