Michael Charles Wintringham CNZM (born 1947) is a New Zealand public servant. He served as State Services Commissioner, head of New Zealand's public service, from 1997 to 2004. Wintringham was born in Blenheim, went to St John's College, Hastings, and has a BA (Hons) degree from Victoria University of Wellington. He started his career in the New Zealand Treasury in 1970, and between 1980 and 1984 was posted to Washington as economic counsellor at the New Zealand Embassy. He then worked as an assistant auditor-general, before leaving the public service to work for a management consultancy in Wellington.