Ion Horațiu Crișan

Ioan Horațiu Carol Crișan (July 7, 1928–January 1, 1994) was a Romanian historian and archaeologist. He conducted research in South-Eastern and Central Europe, focusing on Geto-Dacians and Celts.

Crișan was born in Ciumăfaia, Cluj County and died in Cluj-Napoca, aged 65.

He was very involved with the research at the archaeological site called Șanțul Mare (The Big Ditch), from Pecica, Arad County. He placed the Dacian settlement Ziridava, mentioned by Ptolemy in his Geographia, at this location with a high degree of certainty. He wrote a book named Ziridava – The digs from "Șanțul Mare" from 1960, 1961, 1962, 1964, focused on the archaeological digs performed in 1960s at this ancient city.