Armeško is a settlement north of Brestanica in the Municipality of Krško in eastern Slovenia. The area was traditionally part of Lower Carniola. It is now included with the rest of the municipality in the Lower Sava Statistical Region.
The local church, built on a hill northeast of the main core of the settlement, is dedicated to the Holy Cross. It is a medieval structure that was remodelled in the Baroque style in the 18th century. Its interior was refurbished in the 19th century.