Maurice Fiennes

{{Short description|English industrialist}}

{{Use dmy dates|date=April 2022}}

Sir Maurice Alberic Twisleton-Wykeham-Fiennes{{efn|This British person has the barrelled surname Twisleton-Wykeham-Fiennes, but is known by the surname Fiennes.}} (1 March 1907 – 14 September 1994) was an English industrialist.{{cite book |title= Burke's Peerage, Baronetage & Knighthood|publisher=Burke's Peerage & Gentry |editor= Mosley, Charles |editor-link= Charles Mosley (genealogist) |edition=107 |year= 2003 |ref=Burke |isbn=0-9711966-2-1}}

Fiennes was the son of Alberic Arthur Twisleton-Wykeham-Fiennes, and his wife, Gertrude Theodosia Pomeroy (née Colley), and great-grandson of Frederick Benjamin Twisleton-Wykeham-Fiennes, 16th Baron Saye and Sele. He was educated at the independent Repton School in the village of Repton in Derbyshire and at Armstrong College in Newcastle-upon-Tyne.

He was the managing director of Davy & United Engineering and chairman of Davy-Ashmore in Sheffield, and achieved success as a producer of high quality British steel.{{cite book|last1=Langrish|first1=J.|last2=Gibbons|first2=M.|last3=Evans|first3=W. G.|last4=Jevons|first4=F. R.|title=Wealth from Knowledge: Studies of Innovation in Industry|date=1972|publisher=Springer|isbn=9781349010547|page=216|url=https://books.google.com/books?id=ooavCwAAQBAJ&dq=Sir+Maurice+Fiennes&pg=PA216|access-date=13 May 2018|language=en}}{{cite book|last1=Hague|first1=Douglas|last2=Wilkinson|first2=Geoffrey|title=The IRC - An Experiment in Industrial Intervention: A History of the Industrial Reorganisation Corporation|date=2018|publisher=Routledge|isbn=9781351253147|page=189|url=https://books.google.com/books?id=-wRGDwAAQBAJ&dq=Sir+Maurice+Fiennes&pg=PT189|access-date=13 May 2018|language=en}} He was made a knight in the 1965 New Year Honours in recognition of his contributions to British engineering.{{London Gazette |issue=43529 |date=29 December 1964 | page= 1 |supp=y}}

He married Sylvia Joan Finlay, with whom he had five children including photographer Mark Fiennes. He was the grandfather of actors Ralph Fiennes and Joseph Fiennes, and great-grandfather to model and actor Hero Fiennes Tiffin.