Zi
Zi or ZI may refer to:
Arts and entertainment
- Zi (album), a 2016 album by Negură Bunget
 - Zi (Zoids), a fictional planet in the Zoids franchise
 
Language
- Zi (cuneiform), a sign
 - Chinese characters, known as zi (字)
 - Thracian word derived from *Dyēus
 
People
- Zi (surname) (子), a surname used by Shang kings
 - Zi (title) (子), a Chinese honorific used for ancient viscounts and for master philosophers
 - Zi (name) (字), an alternate term for East Asian courtesy names
 
Science, technology and transport
- Zi Corporation, a Canadian software company
 - Zi (prefix symbol), for digital data size
 - Zona incerta, a brain region
 - Aigle Azur French airline (1946–1955; IATA:
ZI)