David Humphreys may refer to: David Humphreys (soldier) (1752–1818), American Revolutionary War soldier and poet David Humphreys (rugby union) (born 1971), Irish rugby player David Campbell Humphreys (1817–1879), U.S. federal judge David Humphreys (cyclist) (born 1936), Australian cyclist David Carlisle Humphreys (1855–1921), engineer, architect, educator and co-founder of Omicron Delta Kappa David L. Humphreys (born 1939), Canadian journalist, writer, lobbyist, and consultant