Robert James "Sam" Berry (26 October 1934 – 29 March 2018) was a British geneticist, naturalist and Christian theorist.
He was professor of genetics at University College London between 1974-2000.
He was president from 1983 to 1986 of the Linnean Society, the British Ecological Society and the European Ecological Federation.
As a Christian, Berry has spoken out in favour of theistic evolution, and served as a lay member of the Church of England's General Synod and president of Christians in Science.
He gave the 1997–98 Glasgow Gifford Lectures entitled Gods, Genes, Greens and Everything.