Thea is a ♀ female name.
Thea is a short form of Dorothea or Theodora and thus is of Greek origin. Besides, Thea is a feminine form of the masculine name Theo.
The meaning of Thea is “gift of God” (from ancient Greek “theós/θεός” = God + “dôron/δῶρον” = gift). Without the second name element, Thea just means “goddess” or “godly”.