20th-century Welsh scientists

British archaeologist (1914-1986)

Welsh physicist (1928–2015)

British scientist (1834–1913)

Welsh Muslim scholar

Welsh photographer and astronomer (1834-1926)

Welsh botanist (1879-1948)

Welsh physicist (1916-1999)

Welsh physicist (1903-1979)

British anthropologist and ethnologist

Welsh physicist

Welsh Mathematician (1941–2019)

British botanist and phycologist (1893-1981)

Welsh plant pathologist and mountaineer (1895-1991)

British botanist, ecologist, university teacher and writer (1921-2013)

Welsh politician (1939-2003)

Welsh scientist (1903–1977)

Welsh physicist and Vice-Chancellor of Sheffield University