Ihan was attested in written records in 1228 as Uichan (and as Iouchan in 1296, Jowchan in 1330, Jawchan in 1347, and Yawch in 1458). The Slovene name was originally *Juhan, as indicated by the German transcriptions. The toponym is likely derived from a Slavic personal name such as *Vojuxanъ and unrelated to the German name Johann.[4] In the past the German name was Jauchen.[2]
Church
The parish church in Ihan stands in the northeast part of the village. It is dedicated to Saint George. There is a cemetery next to the church.[5]
Notable people
Notable people that were born or lived in Ihan include: