Ides or IDES may refer to:

• Ides (calendar), a day in the Roman calendar that fell roughly in the middle of the month. In March, May, July, August and October it was the 15th day of the month; in other months it was the 13th
  • Ides of March, a day in the Roman calendar that corresponded to March 15; it was marked by several religious observances and became notorious as the date of the assassination of Julius Caesar in 44 BC

• Saint Ides, an Irish saint

• "St. Ides Heaven", a song by Elliott Smith, released on his album Elliott Smith (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 that had a major hit with the song "Vehicle" in 1970

• Intrusion Detection Expert System or IDES
• SAP AG's IDES, Internet Demonstration and Evaluation System

• St. Ides, a brand of malt liquor
• Initiative for the Development of Soria or IDES, a regional political party in Spain
• Illinois Department of Employment Security

• IDE (disambiguation)
• Idis (Germanic), a being in Germanic paganism

This disambiguation page lists articles associated with the title Ides.
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