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Worldwide, Deist (Deus , Deista , Deist ) is a common masculine first name. The first name Deist is characteristic of Sub-Saharan Africa, particularly Tanzania, where it is quite a common boy's name, the Democratic Republic of the Congo, where it is a rare unisex name, and Angola, where it is a rare male name. Measured by absolute frequency, the name is most common in Tanzania, the Democratic Republic of the Congo, and Indonesia. More prevalently, Deist is the last name as well as the forename.
Deist is also a name for the fictitious and mythical characters: .