Sunfish or sun-fish may refer to:

• Centrarchidae, or sunfishes, a family of freshwater fish
  • Lepomis, the genus of true sunfish
• Molidae, the family of ocean sunfishes
  • Mola (fish), or sunfish
    • Ocean sunfish, Mola mola
• Basking shark, Cetorhinus maximus, common names include sun-fish
• Opah, a family of saltwater fish family Lampridae commonly known as sunfish

• The Sunfish, 2014 Danish film Klumpfisken
• Sunfish (musical), 2013

• Sunfish, Kentucky, U.S.
• Sunfish Pond, in Worthington State Forest, New Jersey, U.S.
• Sunfish Township, Pike County, Ohio, U.S.

• Sunfish (sailboat), a sailing dinghy
• HMS Sunfish, the name of several ships of the Royal Navy
• USS Sunfish, the name of several ships of the United States Navy

• All pages with titles beginning with Sunfish
• All pages with titles containing Sunfish