Beciu () is a commune in Teleorman County, Muntenia, Romania. It is composed of three villages: BârseÃÂtii de Jos, Beciu, and Smârdan. These were part of Plopii-SlÃÂviteÃÂti Commune until 2004, when they were split off.
The commune is situated on the Wallachian Plain, at an altitude of , on the left bank of the Olt River. It is located in the western part of Teleorman County, from the county seat, Alexandria, on the border with Olt County.