In Greek mythology, Gelos (/ - /,; Ancient Greek: Γέλως) was the divine personification of laughter. According to Philostratus the Elder, he was believed to enter the retinue of Dionysus alongside Comus. Plutarch relates that Lycurgus of Sparta dedicated a small statue of Gelos to the god, and elsewhere, mentions that in Sparta there was a sanctuary of Gelos, as well as those of Thanatos, Phobos "and other [personifications of] experiences of this kind".
Risus was the Latin rendition of the name Gelos. A festival in honor of Risus (i. e. Gelos) in Thessaly was described by Apuleius, but it is unknown whether it was an actual event or writer's invention.
- Philostratus the Elder. Imagines, translated by Arthur Fairbanks (1864-1944). Loeb Classical Library Volume 256. London: William Heinemann, 1931. Online version at the Topos Text Project.
- Philostratus the Lemnian (Philostratus Major), Flavii Philostrati Opera. Vol 2. Carl Ludwig Kayser. in aedibus B. G. Teubneri. Lipsiae. 1871. Greek text available at the Perseus Digital Library.