- Language: Petjo
- Alternate names: Petjoh, Pecok
- Language code: pey
- Language family: Indo-European, Classical Indo-European, Germanic, Northwest Germanic, West Germanic, Macro-Dutch, Middle-Modern Dutch, Modern Dutch, Global Dutch
- Creole language
- Number of speakers: some
- Vulnerability: Endangered
Predominantly Malay and Dutch (See: [[Dutch]]) vocabulary, with Malay and Sundanese elements.
Petjo is spoken in Indonesia, Southeast Asia.