Caio may refer to:
Caio (name), a Portuguese given name derived from the Latin given name Gaius Caio, Carmarthenshire, a village in west Wales Caio (moth), a genus Chief AI officer, a senior executive position responsible for overseeing artificial intelligence strategies Italian destroyer Caio Duilio, a destroyer of the Italian Navy
Automotive Caio Induscar (Brazil)
See also Caius (disambiguation) Gaius