Tomišelj (pronounced [tɔˈmiːʃəl]; German: Tomischl[2]) is a village in the Municipality of Ig in central Slovenia, on the edge of the marshland south of the capital Ljubljana.

[3] Tomišelj was attested in written records in 1397 and 1436 as Domischel (and as Thomuschl in 1415 and Tomischel in 1468).

[4][5] The name was nominalized from an adjective form of a hypocorism, which would have been *Tomisel, and the name therefore means 'Tomisel's village'.

[2] The local parish church is dedicated to Our Lady of the Rosary and belongs to the Roman Catholic Archdiocese of Ljubljana.

It was built by Gregor Maček Sr.,[6] at the initiative of Mihael Omersa [sl] from 1720 until 1724 on the site of a small predecessor church, where the oldest votive deposit dated to 1519 according to an old urbarium.