Se may refer to:
- Selenium, a chemical element
- Se (kana) (せ and セ), a Japanese kana
- Se (unit of measurement) (畝), a Japanese unit of area
- Northern Sami language ISO 639-1 code
- Se (instrument) (瑟), a traditional Chinese musical instrument
- Sweden ISO country code and Internet ccTLD
- SE postcode area
- Southeast (disambiguation) – One of four ordinal directions, in weather forecasting and geography
- Stock exchange
- Second Edition
- Special edition
- Special Entry, in a tennis or other tournament
- Split End, a type of wide receiver in American football
Read more about SE: Geography, Technology, Science, and Manufacturing, Science and Education, Government and States, Other