• Thuja Linnaeus, 1753
• Thuja occidentalis Linnaeus
• Thuja occidentslis Linnaeus accepted as Thuja occidentalis Linnaeus
• Thuja orientalis Linnaeus accepted as Platycladus orientalis (L.) Franco
• Thuja plicata Donn ex D. Don
• Thujacorticium J. Ginns, 1988
• Thujacorticium mirabile Ginns, 1988
• Thujadendron W. Bock, 1969 † (uncertain)
• Thujaria accepted as Thuiaria Fleming, 1828
• Thujaria variabilis Broch, 1918 accepted as Thuiaria arctica (Bonnevie, 1899)
• Thujatostrobus W. Bock, 1969 † (uncertain)