Keter (Hebrew: , "crown"), in Kabbalah, is one of the ten Sephirot ("Divine emanations").
Keter may also refer to:
- Keter (name), a name of Kenyan origin
- Keter, a component of Yesod (web framework)
- Keter Plastic, an Israeli plastic manufacturing company
- Keter Publishing House, a book publisher based in Israel
- Tag (Hebrew writing), a calligraphic ornament also called keter
- Keter, a classification for hard-to-contain anomalies in the fictional SCP Foundation universe