The pelvis forms a key anatomical and functional linkage between the axial and appendicular skeleton. It is composed of three main bones and is an anatomically complex structure. Yet, for many groups of limbed animals, we have limited knowledge of the standing variation and the ecological, phylogenetic and functional correlates of pelvis shape. This study quantifies pelvis shape in a sample of lizards spanning ecological and phylogenetic diversity. Geometric morphometrics was used to describe the morphospace occupied by the lizard pelvis. Pelvis shape was mapped onto lizard phylogeny to explore the evolutionary history of shape and the effects of habitat use and locomotor mode were tested in a phylogenetic context. Results suggest that clades of lizards have distinct pelvis shapes and that both habitat use and bipedalism are correlated with distinct pelvis shapes.