Firefly Festival may refer to:

• Firefly Music Festival, annual music festival held at the Dover International Speedway in Dover, Delaware, United States
• Fireflies Festival of Sacred Music, annual music festival held at the Fireflies Ashram in Bangalore, India
• Firefly Arts Collective, non-profit organization that facilitates the annual New England regional burner festival 'Firefly'
• Muju Firefly Festival, Korea's annual representative environmental festival held on the theme of Firefly, Natural Treasure No. 322