State Road 123 (Serbia)

State Road 123, is an IIA-class road in northern Serbia, connecting Sviloš with Sremska Mitrovica. It is located in Vojvodina.

Before the new road categorization regulation given in 2013, the route wore the following names: P 116 (before 2012) / 125 (after 2012).

The existing route is a regional road with two traffic lanes. By the valid Space Plan of Republic of Serbia the road is not planned for upgrading to main road, and is expected to be conditioned in its current state.