Óscar Pastor (born 3 March 1962 in Valencia) is a Spanish computer scientist, Professor of software production methods at the Department of Information Systems and Computing of Universitat Politècnica de València, and the director of the Research Centre in Software Production Methods (PROS).

Former researcher at HP Labs (Bristol, UK), in 1986 he became an associate professor at the Faculty of Computer Science of Universitat Politècnica de València.

He received the ER Fellow Award in 2010 for his contributions to the conceptual modeling area,[3] and has been keynote speaker at a dozen of international conferences.

[6] He authored the OO-Method,[7] an object-oriented, model-driven method for enterprise information systems, that is currently supported by the Integranova Software Solutions technology.

To tackle with modelling layers that are closer to the business stakeholders, he has explored several requirements engineering methods and languages (ranging from use cases to BPMN[8]).