Kuigatsi is a village in Otepää Parish, Valga County in Estonia.

On the basis of the 1765 directive, a village school was created in Kuigatsi, which was opened in 1768.

There is a bus stop in Kuigatsi, and the Mägiste railway station is located 2 kilometers from the village center.

The village is characterized by scattered settlements, the names of the farms are among others Haljamäe, Laudanurme, Pedajamäe, Luiga, Laane, Villemi, Hargo and others.

Clergyman Paul Uibopuu (1910–1984) and nature conservation figure and orienteer Madis Aruja (1936–1995) were born in Kuigatsi.