Ides or IDES may refer to:
Calendar dates
- Ides (calendar), a day in the Roman calendar that fell roughly in the middle of the month
- Ides of March, a day in the Roman calendar that corresponded to March 15
Music
- "St. Ides Heaven", a song by Elliott Smith, on his self-titled album
- "St. Ides of March", a song by Soledad Brothers (band)
- "The Ides of March", a song by Iron Maiden
- The Ides of March (band), an American rock band
Other uses
- Intrusion Detection Expert System (IDES), an SRI International software product
- Saint Ides (c. 480 – c. 570), an Irish saint
- St. Ides, a brand of malt liquor
- Initiative for the Development of Soria or IDES, a Spanish political party
- Illinois Department of Employment Security
See also
- IDE (disambiguation)
- St. Ides (disambiguation)
- Idis (Germanic), a being in Germanic paganism