Tonia (born Arlette Antoine Dominicus, 25 July 1947, Anderlecht) is a Belgian singer, best known for her participation in the 1966 Eurovision Song Contest.

She would often record both Dutch and French cover versions of popular German songs.

In the 1966 Belgian Eurovision selection, Tonia performed four songs and the winner, "Un peu de poivre, un peu de sel" ("A Little Pepper, A Little Salt"), was chosen by postcard voting as the representative for the 11th Eurovision Song Contest, which took place on 5 March in Luxembourg City.

[2] In 1968, Tonia again participated in the Belgian selection with the song "Il y avait", but failed to place in the top two.

[4] After her 1966 Eurovision appearance, Tonia turned her attention to the German market, where she enjoyed a measure of success for several years.