Širje (pronounced [ˈʃiːɾjɛ]) is a settlement in the Municipality of Laško in eastern Slovenia.

It lies on the left bank of the Sava River, immediately northwest of Zidani Most.

It is now included with the rest of the municipality in the Savinja Statistical Region.

The name was changed on the basis of the 1948 Law on Names of Settlements and Designations of Squares, Streets, and Buildings as part of efforts by Slovenia's postwar communist government to remove religious elements from toponyms.

[3][4][5] The parish church, known as Marija Širje, is dedicated to the Immaculate Conception and belongs to the Roman Catholic Diocese of Celje.