This paper summarizes the current knowledge of business process modelling languages, which is increasingly important also in the agri-food industry. It describes the history of business process modelling, currently mostly used alternatives – UML, BPMN, EPC and recaps their strengths and features in which they outperform the others. As demonstrated all three notations can adequately model business processes. They do however differ in some specific features. In some aspects, each of the languages always outperforms the others. Important is that except of some general objective features where the languages differ, there is also a lot of subjective perception of how the single notations perform.