54°54′39.73″N 39°30′45.63″E / 54.9110361°N 39.5126750°E
![](http://up.wiki.x.io/wikipedia/commons/thumb/3/39/Location_of_Rybnovsky_District_%28Ryazan_Oblast%29.svg/220px-Location_of_Rybnovsky_District_%28Ryazan_Oblast%29.svg.png)
Seltsy (Russian: Сельцы; Polish: Sielce) is a rural locality (a selo) in Rybnovsky District of Ryazan Oblast, Russia, located on the Oka River, north-west of Ryazan. The Polish 1st Tadeusz Kościuszko Infantry Division was formed here in May 1943.