The term Sinosphere usually refers to the East Asian cultural sphere, states within East and Southeast Asia that have been significantly influenced by Chinese culture.

It may also refer to:

• James Matisoff's name for the Mainland Southeast Asia linguistic area
• The Sinophone world, the area (mostly East Asia and Southeast Asia) in which Chinese languages are spoken by the majority or a significant number of people
• Sinocentrism, an ideology that the lands which make up China is the cultural, political, or economic center of the world
• Greater China, a geographical region comprising Mainland China, Hong Kong, Macau, and Taiwan

See also

• Little China (ideology), an ideology in which various historical Japanese, Korean, and Vietnamese regimes considered themselves "China" and legitimate inheritors of the Chinese civilization
• Sinophile, one who demonstrates a strong interest and love for Chinese culture or its people