Sinchi Roca (aka Cinchi Roca) was the second Supa Inca of the Kingdom of Cuzco (c.1105 CE – c.1140 CE) and a patriarch of the Hurin dynasty.

The Kingdom of Cuzco would later become Tahuantinsuyu (or the Inca empire) under the direction of Pachacuti. In one of the Inca foundation myths it was he who led his family to the valley of Cuzco.

Sinchi is known for the story of Teuotihi. Teuotihi was an Inca diplomat sent to neighboring kingdom to deliver a message. However, when he got there he was promptly killed and sent back to Sinchi Roca, headless. This prompted a war and a decisive Inca victory at the Battle of Mauedipi . While in Inca legend this led to the dominance of Cuzco over the surrounding valleys, archaeological evidence and the testimony of other groups points to the continued insignificance of the Inca under his rule.

We do now know much about Sinchi Roca historically, but we can assume he was more peaceful than most Inca rulers as Sinchi came to be used as the title for a mayor or local ruler, while Capac, his father's last name as Supa Inca, became the title for a warlord.