Susa (; Shush; ; Hebrew  Shushān; Greek: Σοῦσα ; Shush; Old Persian Çūšā) was an ancient city of the Elamite, First Persian Empire, Seleucid, and Parthian empires of Iran, and one of the most important cities of the Ancient Near East. It is located in the lower Zagros Mountains about east of the Tigris River, between the Karkheh and Dez Rivers.

Suså may refer to:

• Suså Municipality, a former municipality in Zealand, Denmark
• Suså River, a river in Zealand, Denmark

Shusha (; ), or Shushi , is a city in the disputed region of Nagorno-Karabakh in the South Caucasus. It has been under the control of the self-proclaimed Nagorno-Karabakh Republic since its capture in 1992 during the Nagorno-Karabakh War. However, it is a de jure part of the Republic of Azerbaijan, with the status of an administrative division of the surrounding Shusha Rayon. Situated at an altitude of 1,400–1,800 metres (4,600–5,900 ft) in the picturesque Karabakh mountains, Shusha was a popular mountain recreation resort in the Soviet era.

Susa may refer to:

• Susa, an ancient city of the Elamite, Persian and Parthian empires of Iran, located in the lower Zagros Mountains
• Shush, Iran, a modern city near ancient Susa
• Susa, the Berber spelling of Sousse, a Tunisian city in the Sousse Governorate
• Susa, the Arabic spelling of Sousse, a Tunisian city in the Sousse Governorate
• Susa, Cundinamarca, a Colombian municipality and town in the Cundinamarca Department
• Susa, Libya, a Libyan town and seaside resort in the Jabal al Akhdar District
• Susa, Piedmont, an Italian city and comune in the Piedmont region