Taddeo \t(ad)-deo\ as a boy's name is a variant of Tadeo (Spanish) and Thaddeus (Aramaic), and the meaning of Taddeo is "heart".

The baby name Taddeo sounds like Tadd, Tadao, Teddey and Tadio. Other similar baby names are Laddey, Madteo, Paddey, Tadzio, Takeo and Tandey.