Intharacha or In Racha (Thai: อินทราชา, Indarājā), a nephew of Borommarachathirat I and former Lord of Suphanburi who had finally taken the Ayutthayan throne for the Suphannaphum Dynasty, reigned as the sixth king of Ayutthaya (1408–1424).

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Upon his death, his two elder sons fought to the death in single combat aboard elephants. The throne then went to the youngest brother.^[1]: 29