Walter Melvin Gaffney (April 28, 1900 - January 23, 1983) was an American architect and engineer in Massachusetts. He was a graduate of the Wentworth Institute of Technology in Boston and had been working in an architecture firm on the date of his marriage in 1927. The Great Depression struck Massachusetts architecture firms hard, and work was hard to come by, but the resourceful Gaffney found some additional income in the production of an attractive and successful pictorial map of his home stomping grounds, Barnstable and Cape Cod.