Tamatoa III

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| name =Tamatoa III

| title =King of Raiatea

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| image_size =150px

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| reign = 1820 – 10 July 1831

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| successor =Tamatoa IV

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| father =U'uru

| mother =Mai-he'a Te-hani

| birth_date =c. 1757

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| death_date =10 July 1831

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Tamatoa III (c. 1757 – 1831) was the King of Raiatea from 1820 to 1831.{{cn|date=August 2020}}

His father was U'uru, or Vetea-ra'i-'u'uru, who was the son of Tamatoa II by his third wife. His father was the ari'i maro 'ura, high chief, at 'Opoa on Raiatea, during Captain James Cook's visit in 1773.{{cite book|last1=Salmond|first1=Anne|title=Aphrodite's Island|date=2010|publisher=University of California Press|location=Berkeley|isbn=9780520261143|pages=[https://archive.org/details/aphroditesisland00salm/page/249 249,286]|url-access=registration|url=https://archive.org/details/aphroditesisland00salm/page/249}}