Emerald Isle is one of the Canadian arctic islands located in Northwest Territories, Canada. Emerald Isle is a town in Carteret County, North Carolina, United States. The population was 3,488 at the 2000 census. It is part of the Crystal Coast and is located entirely on the Bogue Banks. It is a popular vacation destination, with many million dollar vacation homes lining the ocean side of the town. The Bogue Inlet Fishing Pier, located on the western end of the Bogue Banks is Emerald Isle's only fishing pier. Recently, a beachfront development company applied to purchase the pier's land for the construction of condos. Many area residents and Emerald Isle city officials are now petitioning to stop demolition of the pier.

"The Emerald Isle" is also a comic opera by Sir Arthur Sullivan. The Emerald Isle; or, The Caves of Carrig-Cleena, is a two-act comic opera, with music by Arthur Sullivan and Edward German, and a libretto by Basil Hood. It premiered at the Savoy Theatre on April 27, 1901, closing on November 9, 1901 after a run of 205 performances. There was also a brief run in New York at the Herald Square Theatre for just 50 performances, opening on September 1, 1902, and closing on October 18, 1902.