Siyak may refer to:
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Siyaka
Siyaka (IAST: Sīyaka; reigned c. 949-972 CE), also known as Harsha (IAST: Harṣa), was a Paramara king, who ruled in west-central India. He appears to have been the first independent ruler of the Paramara dynasty.
Siyaka is the earliest Para ...
, a 10th-century Paramara king of central India
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Sihag, a clan of India
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Tonb-e Siyak, a village in Iran
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