For the skipper butterfly genus, see Aethilla (butterfly).

In Greek mythology, Aethilla or Aethylla (Greek: or ) was a daughter of Laomedon and sister of Priam, Astyoche, and Medesicaste. After the fall of Troy she became the prisoner of Protesilaus, who took her, together with other captives, with him on his voyage home. He landed in Thrace in order to take in fresh water. While Protesilaus had gone inland, Aethilla persuaded her fellow prisoners to set fire to the ships. As a result of this being done, the Greeks were forced to remain on the spot and founded the town of Scione. According to other authors, the event took place in Italy; in commemoration of it, the nearby river received the name Nauaethus ("of the burning ships"), while Aethilla, Astyoche and Medesicaste were surnamed the Nauprestidai ("they who set fire to ships").