Stephen William Howlett CBE was formerly Chief Executive of Peabody, one of London's oldest and largest housing associations. He was Chief Executive between 2004 and July 2017 and was appointed to the Peabody Board on 18 May 2011. He also chairs the Board – known as the Court – of the University of Greenwich and presides over its graduation ceremonies as Pro Chancellor. Howlett has been made a 2017 Honorary Fellow of the Royal Institute of British Architects (RIBA).
Howlett was born on 18 November 1951 and brought up in Lavenham, Suffolk. He attended King Edward VI grammar school in Bury St. Edmunds and later Thames Polytechnic in Woolwich where he graduated in Humanities, specialising in Modern History.
He was a Board member of Asset Skills and a member of the Guardian Housing Network Advisory Panel. He was also a member of the Residential Committee of the British Property Federation and one of the Mayor’s Leaders for London on sustainability and an adviser to the Mayor's Infrastructure Delivery Board.
Howlett was chair of the G15, the group of London's 15 largest housing associations, from June 2009 to June 2011. Among the initiatives launched during his two-year tenure were the pilot London Moves scheme to enable social housing residents to move to sustain or take-up work, and a report produced by the London School of Economics which made the case for investment in affordable housing in London. In support of the report, Boris Johnson, mayor of London, said it "make[s] the most compelling case for the government to concentrate its housing programme where it will deliver the greatest returns for all."
As well as affordable housing, education, and skills, Stephen has a particular interest in design and architecture. He is a Trustee of Open-City, London's leading architecture education organisation and organiser of Open House London.
Howlett presided over notable developments at Peabody including:
- The completion of a London-wide refurbishment programme to ensure Peabody's housing stock meets the Decent Homes Standard.
- The issue of a £200 million public bond in 2011  and the issue of a public bond for £350 million in 2013. 
- The purchase of The Crown Estate's London housing properties.
- The growth of Peabody's development pipeline - there are plans to build an average of 1,000 homes a year over the next four years.
- The acquisition of Gallions Housing Association, Trust Thamesmead and Tilfen Land in 2014 to further the regeneration of Thamesmead in SE London.
- "New Year's Honours 2018" (PDF). Gov.uk. Government Digital Service. 29 December 2017. p. 16. Retrieved 29 December 2017.
- Executive team members, Peabody website
- AmicusHorizon Group Annual report 2005/2006
- AmicusHorizon website
- Asset Skills Board of Directors
- Members of the Court of the University of Greenwich
- Guardian Housing Network Advisory Panel members
- Capital connect - Inside Housing magazine article
- Press release - Social landlords launch scheme to help people move around London
- Press release - Case for investment in London's affordable housing is overwhelming
- Inside Housing magazine - Peabody issues £200m bond
- Inside Housing magazine - Peabody strikes £350m bond deal
- Inside Housing magazine - Peabody completes Crown Estate purchase