John Cash (17?? - 18??) was an Irish architectural draughtsman best known for his collaboration with Robert Pool on a book entitled Views of the Most Remarkable Public Buildings, Monuments, and Other Edifices in the City of Dublin. Cash entered the Dublin Society's School of Drawing in Architecture on April 1, 1773 and by 1777 had submitted the drawing for his and Pool's book to the Dublin Society. Little is known about John Cash, but a record exists of a man by that name marrying Isabella Tudor in a church in Dublin on February 19, 1783.