In Greek mythology, Lynceus (/ˈlɪnsiːəs, -sjuːs/; Ancient Greek: Λυγκεύς, romanized: Lunkeús, lit. 'lynx-like') may refer to the following personages:
Also, Lynceus is a crater on Janus (moon of Saturn), named after Lynceus of Messenia in the legend of Castor and Pollux.