A THz twist polarizer formed by supramolecular Fermat’s spiral chiral metamate- rial (SFSCMM) is reported. Twist polarizers (TPs) are the 90◦ polarization rotators, in which transverse magnetic linear polarization is converted into transverse electric linear polarization and vice versa. The proposed SFSCMM consists of twisted bilayered supramolecular Fermat’s spiral patterns, in which each layer is chiral in nature. The design is implemented in polyimide substrate using silver as a metal. Full-wave simulations demonstrated its function of TP, where the SFSCMM shows the zero-point ellipticity with the polarization rotation angle of 89.49◦ at 7.765 THz. The proposed SFSCMM has a dimension of λ/1.38 × λ/1.38 × λ/10.3 at the operating wavelength and can be fabricated through standard layer-by-layer method for the realization of optical logic gates and THz switches.