Agusan may refer to the following:

Look up Agusan in Wiktionary, the free dictionary.

• Agusan province, a former province in the Philippines, now divided between:
  • Agusan del Norte
  • Agusan del Sur
• Legislative district of Agusan in the Philippines for the former province before it was divided into two separate ones
• Agusan River, a river in Mindanao
  • The Agusan Marsh Wildlife Sanctuary

• A symbol in the Tironian notes shorthand system (⟨⁊⟩) when used as an abbreviation for agus ("and") in Irish and Scottish Gaelic
• Agusan language, a Manobo language of The Philippines

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