Jonas Vaiškūnas (born 6 March 1961) is a Lithuanian ethnoastronomer, religious leader, publisher and politician.

He is the head of the department of ethnography at the Museum of Molėtai and priest in the Baltic neopagan organisation Romuva.

Jonas Vaiškūnas was born on 6 March 1961 in the village Papiškė [lt] in Švenčionys District Municipality.

[1] He is the head of the Museum of Molėtai's Ethnographical Hut and Sky Observation Post, which he created in the 1990s.

[4] Vaiškūnas has been interviewed in the Lithuanian media in his role as ethnoastronomer during calendar holidays and celestial phenomena.