In this paper we prove the Hölder regularity of bounded, uniformly continuous, viscosity solutions of some degenerate fully nonlinear equations in the Heisenberg group.1991 Mathematics Subject Classification. 35D40, 35B65, 35H20. Key words and phrases. Heisenberg group, viscosity solutions, Theorem of the sums. The author is supported by MURST, Italy, and GNAMPA project 2017: Regolarità delle soluzioni viscose per equazioni a derivate parziali non lineari degeneri.