Ides

Ides or IDES may refer to:

• 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

• "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

• 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