Rhesus is an Athenian tragedy that belongs to the transmitted plays of Euripides. Its authorship has been disputed since antiquity, and the issue has invested modern scholarship since the 17th century
Euripides was a tragedian of classical Athens. Along with Aeschylus and Sophocles, he is one of the three ancient Greek tragedians for whom a significant number of plays have survived. Some ancient scholars attributed 95 plays to him but, according to the Suda, it was 92 at most.