Karlsøya or Karlsøy ( Norwegian: Karl's island) may refer to:

Places

Norway

• Karlsøy Municipality, a municipality in Troms county
• Karlsøy Church, a church in Karlsøy Municipality in Troms county
• Karlsøy, Nordland, a village in Hamarøy municipality in Nordland county
• Karlsøya (Møre og Romsdal), an island in Molde municipality, Møre og Romsdal county
• Karlsøya (Nærøysund), an island in Nærøysund municipality, Trøndelag county
• Karlsøya (Nordland), an island in Bodø municipality, Nordland county
• Karlsøya (Ørland), an island in Ørland municipality, Trøndelag county
• Karlsøya (Troms), an island in Karlsøy municipality, Troms county
• Karlsøya (Østfold), an island in Sarpsborg municipality, Østfold county

This disambiguation page lists articles associated with the title Karlsøya.
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