Michael Mansfield is an English barrister and King's Counsel.
Michael or Mike Mansfield may also refer to:
- Michael Mansfield (footballer) (born 1971), Australian rules footballer
- Mike Mansfield (Michael Joseph Mansfield, 1903–2001), American Democratic senator from Montana
- Mike Mansfield UK television producer and director (born 1940), known for Supersonic (TV series)
- Michael Mansfield (diplomat), New Zealand High Commissioner