Utøy or Utoy can refer to:

• Utøy, Norway, a village
• Achernar Island (also known as Utöy), an island off of Antarctica
• Utoy Creek, Georgia, United States

Utøy or Utøya is a village area in the municipality of Inderøy in Nord-Trøndelag county, Norway. The village sits about half way between Vangshylla (to the southwest) and Sakshaug (to the northeast).  Kjerknesvågen lies about to the north, and the Trondheimsfjord lies just to the south. The "Utøy area" generally includes the area around the village which is the southern part of the Inderøy peninsula.

Achernar Island , also known as Utöy, is an island  long, lying west of Shaula Island in the Øygarden Group. Mapped by Norwegian cartographers from aerial photos taken by the Lars Christensen Expedition, 1936–37, and named Utoy (the outer island). The group was first visited by an ANARE (Australian National Antarctic Research Expeditions) party in 1954; the island was renamed by ANCA after the star Achernar, which was used for an astrofix in the vicinity.

Utøy or Utoy can refer to:

• Utøy, Norway, a village
• Achernar Island (also known as Utöy), an island off of Antarctica
• Utoy Creek, Georgia, United States

Utøy or Utøya is a village area in the municipality of Inderøy in Nord-Trøndelag county, Norway. The village sits about half way between Vangshylla (to the southwest) and Sakshaug (to the northeast).  Kjerknesvågen lies about to the north, and the Trondheimsfjord lies just to the south. The "Utøy area" generally includes the area around the village which is the southern part of the Inderøy peninsula.

Achernar Island , also known as Utöy, is an island  long, lying west of Shaula Island in the Øygarden Group. Mapped by Norwegian cartographers from aerial photos taken by the Lars Christensen Expedition, 1936–37, and named Utoy (the outer island). The group was first visited by an ANARE (Australian National Antarctic Research Expeditions) party in 1954; the island was renamed by ANCA after the star Achernar, which was used for an astrofix in the vicinity.