Radlje ob Dravi (, in older sources Marbeg, Mahrenberg ) is a town in the Municipality of Radlje ob Dravi in northeastern Slovenia. It is the seat of the municipality. The settlement lies on a terrace on the left bank of the Drava River.
The name of the settlement was changed from Marenberg to Radlje ob Dravi in 1952. 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 German elements from toponyms.
