Mnestheus

{{Short description|Character in the Aeneid}}

{{distinguish|Menesthius|Menestheus }}

Mnestheus ({{langx|grc|Μνησθεός}}) is a character from Roman mythology, found in Virgil's Aeneid. He is described by Virgil as the ancestral hero of the Memmii and "Of the house of Assaracus". One of a handful of vaguely defined lieutenants under Aeneas, he appears to be Aeneas's most senior captain, taking charge in Book 9 in his absence. He takes second place in the boat race during the funeral games of Anchises in Book 5.