Altona may refer to:
- Altona, Hamburg, Germany
- Altona-Nord, Hamburg, Germany
- Altona, Illinois, United States
- Altona, Indiana, United States
- Altona, Manitoba, Canada
- Altona (town), New York, located in Clinton County or
- Altona (CDP), New York, located within the Town of Altona.
- Altona, Ontario, Canada
- Altonah, Utah, United States; also spelled Altona
- Altona, Victoria, a suburb of Melbourne, Australia
- Altona North, Victoria, Australia
- Altona Meadows, Victoria, Australia
- Electoral district of Altona, an electoral district in Victoria, Australia
- Altona, United States Virgin Islands (disambiguation), multiple locations
- New Holstein, Wisconsin, United States; originally known as Altona
- Altona (district), a district of Eldena in Mecklenburg, Germany
Altona may also refer to:
- 850 Altona, a minor planet in the Solar System
- Altona, Bergen, the oldest tavern in Bergen, Norway
- Altona monastery, near Greifswald in Mecklenburg-Western Pomerania, Germany
- Altona (West Virginia), an historic farm near Charles Town
- The Condemned of Altona (Les Séquestrés d'Altona), a play by Jean-Paul Sartre