Py
PY, Py or py may stand for:
- Pinyin, a system of romanization (phonetic notation and transliteration to roman script) for Mandarin Chinese used in the People's Republic of China.
- The Internet Top-level domain notation for Paraguay.
- The Python programming language uses .py as an filename extension.
- The Portsmouth yardstick\, used as a rating system in yacht racing and dinghy racing.