Sir Peter John Gregson, FREng[1] (3 November 1957 – 23 February 2024) was a British research engineer and chair of the Henry Royce Institute.

External recognition has included Queen's Anniversary Prizes for Green Chemistry and the Comprehensive Cancer Centre (2006 & 2012), Times Higher Education Awards for Innovation in Culture and the Arts (2008), Entrepreneurial University of the Year (2009), Engineering Research Team of the Year (2010), Innovative Teacher of the Year (2011) and Outstanding Fundraising Team (2012), and an Athena Swan Institutional Silver Award (2012).

He served EPSRC in many capacities including as chair of Postgraduate Training Packages (2000) and the academic representative on the User Panel (2004–06).

He has served the Institute of Materials, Minerals and Mining in many roles including as chair of the Alloy Design Committee (1991–92), chair of the Metal Science Committee (1992–93), member of Materials Strategy Commission (1997–99) and Light Metals Division (2000 -2002); He served on the Council of the Royal Academy of Engineering[1] (2005–08) and as chair of Membership Panel 4 (2006–09); He contributed to the Strategic Leadership Consultations of the Windsor Leadership Trust, the Harvard University Programme for University presidents and the American Council on Education Fellows Programme.

He was Churchwarden of Romsey Abbey (1991–95) and their charity support included Wooden Spoon, Naomi House, l’Arche Belfast, Arthritis Care (NI) Association, Lyric Theatre and Camerata Ireland.

He served as Deputy Lieutenant of Belfast (2007–13) and received the Flax Trust Award for service to the community in 2010.