The Ahtna are an Alaska Native Athabaskan people of Alaska.

Ahtna or Atna may also refer to:

Places

• Atna Range, a small sub-range of the Skeena Mountains in northern British Columbia, Canada
• Atna, Norway, a village in the municipality of Stor-Elvdal in Innlandet county, Norway
• Atna Peaks, an eroded shield volcano in the Wrangell Mountains of eastern Alaska
• Copper River (Alaska), also known as the Ahtna River
• Lake Atna, a proglacial lake that was in the Copper River Basin

Other

• Ahtna language, the indigenous language of the Ahtna people
• Ahtna, Incorporated, an Alaska Native Regional Corporation created under the Alaska Native Claims Settlement Act of 1971