Theo \the()-theo\ as a boy's name (also used as girl's name Theo), is a variant of Theobald (Old German) and Theodore (Greek), and the meaning of Theo is "brave people; God's gift".

The baby name Theo sounds like Teo, Teyo, Thu and Tye. Other similar baby names are Theon, Thano, Che, Leo, Reo, Shea, Thad, Thaw, Thom, Thor and Thilo.