Ascanius (disambiguation)
Ascanius may refer to:
- In Classical mythology:
 - Ascanius, a genus of bugs in the subfamily Pachycorinae
 - Lake Ascanius in Anatolia.
 - Peter Ascanius (1723–1803), Norwegian biologist.
 - Domenicus van Wijnen, called Ascanius (1661 – c.1695), Dutch painter.