Arthur Matthew Weld Downing (13 April 1850 – 8 December 1917) was an Anglo-Irish mathematician and astronomer. Downing's major contribution to astronomy is in the calculation of the positions and movements of astronomical bodies, as well as being a founder of the British Astronomical Association.

Early life and education

Downing was born in County Carlow on 13 April 1850, the younger son of Arthur Matthew Downing and Mary Weld. He attended Nutgrove School, near Rathfarnham, Dublin under the tuition Philip Jones. He then went on to study in Trinity College Dublin, from 1866, receiving a scholarship in science graduating with a BA in 1871 with a gold medal in mathematics. Downing went on to receive a Masters in 1881, and an honorary Doctor of Science in 1893.

Downing was married to Ellen Jane Downing, with whom he had one daughter. Downing died suddenly from heart disease on 8 December 1917,