Idro may refer to:

• Idro (BS), an Italian town and comune in the Province of Brescia (BS), Lombardy
• Lake Idro (or Lago d’Idro) the subalpine Italian lake named after the town.

IDRO, an acronym, refers to:

• IDRO, Industrial Development and Renovation Organization of Iran
• IDRO, Internal Dobrudjan Revolutionary Organization

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