Tjøtta may refer to:

• Jacqueline Naze Tjøtta, a French-born mathematician who settled in Norway and became the first female mathematical sciences professor in Norway
• Hárek of Tjøtta, a Norwegian farmer and local chieftain

• Tjøtta, a village in Alstahaug Municipality in Nordland county, Norway
• Tjøtta Municipality, a former municipality in Nordland county, Norway
• Tjøtta (island), an island within Alstahaug Municipality in Nordland county, Norway
• Tjøtta Church, a church in Alstahaug Municipality in Nordland county, Norway
• Tjøtta International War Cemetery, a war cemetery on the island of Tjøtta in Nordland county, Norway
• Tjøtta Russian War Cemetery, a war cemetery on the island of Tjøtta in Nordland county, Norway