- Spanish: Teo is a shortened form of the name Teodoro, which is derived from the Greek name Theodoros. It means "gift of God" or "divine gift".
- Italian: Teo is a short form of various names, such as Teobaldo, Teodoro, or Terenzio. It is also sometimes used as a diminutive of the names Teofilo or Teofanio. In Italy, Teo can also be a surname.
- Portuguese: Teo is a short form of the name Mateus, which is derived from the Hebrew name Mattityahu. It means "gift of God".
- German: Teo is a shortened form of the name Theodor, which is derived from the Greek name Theodoros. It means "gift of God" or "divine gift".
- Hawaiian: Teo means "God is with me" or "God is my helper".
- Maori: Teo can be a shortened form of the name Teora, which means "to be loved" or "beloved".
- Japanese: Teo can be a name (written in kanji as 手負) that means "wounded hand".