PNG usually refers to:
- Papua New Guinea, a country in Oceania, located in the southwestern Pacific Ocean
- Portable Network Graphics (.png), a bitmap image file format
PNG may also refer to:
- Partidul Noua Generaţie, former name of a Romanian political party
- Persona non grata, a Latin term meaning "an unwelcome person"
- Piped natural gas, a gaseous fossil fuel delivered by pipeline
- Planetary nebula presented in galactic coordinates (convention of the Strasbourg-ESO Catalog of Galactic Planetary Nebulae)
- Png (surname), a Min Nan Chinese surname
- Pongu language (ISO 639-3 code), a Kainji language of Nigeria
- Port Neches–Groves High School, in Port Neches, Texas