Simultaneous diagonalization of a family of commuting linear operators on a finite dimensional vectorspaceisawellknownresultinlinearalgebra[3].Thisresultisapplicabletoanarbitrary(possibly infinite) family and asserts the existence of a basis with respect to which all operators of thefamily are diagonal. In this paper, we consider an anti-commuting familyAof operators on a finite dimensional vector space V and we show that if the family is diagonalizable over the complex numbers, then the operatorsinthefamilycanbeputsimultaneouslyintocanonical formsover boththecomplexandreal numbers.