Thaddée is a masculine given name. Notable people with this name include:

Thaddée Ndikumana, Burundian politician Thaddée Nsengiyumva (1949–1994), Rwandan bishop Thaddée Ntihinyurwa (born 1942), Rwandan prelate Thaddée Siryuyumunsi (fl. 1960s), Burundian politician

See also Thaddeus