Viktor Lazlo (real name: Sonia Dronier, born 7 October 1960 in Lorient, France) is a French-Belgian singer of Grenadian and Martiniquan descent. She studied in Belgium, where she is primarily known. Her biggest hit was "Breathless" in 1987. That year she also hosted the Eurovision Song Contest 1987 held in Brussels.

Dronier took her stage name from Paul Henreid's character Victor Laszlo in the 1942 film Casablanca. She sings in French, English, Spanish and German.