Process modelling has seen widespread acceptance, particularly in large IT-enabled Business Process Re engineering projects. It is applied, as a process design and management technique, across all lifecycle phases of a system. While there has been much research on alternative process modelling techniques, little attention has been focused on post-hoc evaluation of process modelling success. This paper addresses this gap, and presents a process modelling success measurement framework, which includes the dimensions: modeler satisfaction, process-model quality; model use; user satisfaction; and process modelling impact. Measurement items for each dimension are suggested.