Gan can have several meanings:

• 甘, or Gān, is an abbreviation for the Gansu province of the People's Republic of China.
• 赣, or Gàn, is an abbreviation for the Jiangxi province of the People's Republic of China.
• 赣 (Gàn) is also an abbreviation for the Gan varieties of Chinese, which are concentrated in and form the typical speech of Jiangxi.
• Gan is a port in the Maldives.
• Gan is a commune in the Pyrénées-Atlantiques département in France.