Barbara Maria Karel Deckx (born 22 January 1974), better known by her stage name Barbara Dex, is a Belgian singer who represented her country in the Eurovision Song Contest 1993 with the song "Iemand als jij".

Dex had qualified via the Belgian national heat, Eurosong 93, held at the Casino Knokke on 6 March.

At the Eurovision in Millstreet, she performed seventh, after Greece's entry "Ellada, chora tou fotos" and before Malta's song "This Time".

Barbara returned to the Belgian final in 2004, teaming up with Alides for the song "One Life" which placed third.

Her brother Tom Deckx has played bass guitar in the musical groups Tush and Nuts.