Crobylus was an Athenian comic poet who lived and worked during the 4th century BCE. He belongs to the period known as Middle Comedy, which bridged the gap between the earlier, politically focused Old Comedy and the later, more plot-driven New Comedy. No details about his personal life are known.

His work survives only in fragments. According to later ancient sources, including a Byzantine encyclopedia, he was the author of two plays: The Woman from Miletus and The False Accuser. Both plays are lost, and their content is known only through their titles and a few quoted lines preserved by other authors.

Crobylus’s significance lies in his place within a poorly documented era of theater history. The titles of his lost plays suggest a focus on social character types and situations, which is typical of Middle Comedy’s shift away from political satire. His recorded existence helps scholars map the evolution of Greek comedy, even though the scant remains of his work prevent a deeper understanding of his specific style or themes.