PNG may stand for:

• Papua New Guinea, a country in Oceania, located in the southwestern Pacific Ocean
• Partidul Noua Generaţie, former name of a Romanian political party
• Persona non grata, a term used in diplomacy which literally means "an unwelcome person"
• Portable Network Graphics, a bitmap image format that employs lossless data compression (typically uses the "png" file-extension)
• Port Neches-Groves High School, in Port Neches, Texas

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