Sir Sigmund Sternberg, (born June 2, 1921), is a Hungarian-born British philanthropist and entrepreneur, known for his interfaith work. 
Sternberg, the former Chairman of Isys plc, gave £100,000 to the Labour Party in May 2001. He has also given large donations in 1977 and 1979 and spent more than £5,000 on "tickets for dinners" in 1998.
Isys plc is a software company which includes IBM, NatWest, Halifax, Abbey National, National Power, GlaxoWellcome and BAE Systems among its clients. Sir Sigmund Sternberg is also the Chairman of Martin Slowe Estates Ltd (a property development company) and founder of the Commodities Research Unit (one of the largest commodity consultancies in the world). He is a fellow of the Institute of Directors and is Vice President of the Labour Finance and Industry Group (he was Deputy Chairman from 1972-93).
In 2004, Sigmund Sternberg withdrew the Sternberg Interfaith Prize from being given to Iqbal Sacranie of the Muslim Council of Britain. This was as a result of Sacranie's denunciation of Israeli policies as "ethnic cleansing". 
- Institute for Business Ethics
- Israel Center for Social and Economic Progress
- Israel-Diaspora Trust, trustee 2005-2008
- Labour Finance and Industry Group
- International Council of Christians and Jews, Executive circa 1987.
- Sir Sigmund Sternberg Encyclopedia Britannica, accessed 8 August 2013
- Taken from 'Sigmund Sternberg' available through search function on http://www.red-star-research.org.uk/subframe5.html
- Dominic Casciani, UK Muslim loses top peace award, BBC News, 1 June 2004.
- Parliament.uk The Register of Members' Financial Interests: Part 1(as at 13th July 2015) - Andy Burnham, accessed 21 July 2015.