PROJECTIVE SYMMETRY AND HOLONOMY G S Hall Key words: Projective symmetry, connections, holonomy. 1991 Math. Subject Classification: 53B05. Abstract: Some results are presented which concern the relationship between the existence of projective symmetries and the reducibility of the holonomy group for Riemannian and Pseudo-Riemannian manifolds. A few general remarks are made on the existence of projective vector fields.