Massive open online courses (MOOCs) have emerged as an educational innovation with the potential to increase access to and improve the quality of education. Different stakeholders in education view MOOCs from different perspectives. However, there are common questions related to the quality of these courses and to the granting of equivalent credits. This document provides a set of guidelines designed to support decision making about the sorts of quality measures that are appropriate in different contexts. These MOOC Quality Guidelines can be used by governments, accreditation agencies, institutions and learners with an interest in developing, running, accrediting or participating in MOOCs, to improve quality assurance (QA) and accreditation.