Speakman is one of the thousands of new names that the Norman Conquest of 1066 brought to England. It comes from the Norman given name Espec.
Alfred Speakman (1880–1943), politician from Alberta, Canada
Bill Speakman, VC (born 1927), English recipient of the Victoria Cross
Fred J Speakman, English naturalist and author
Howard C. Speakman (1892–1952), United States federal judge
James Stanley Speakman (1906–1962), accountant and World War II soldier in the Canadian Expeditionary Force
Jeff Speakman (born 1958), American actor and an accomplished martial artist in the art of kenpo
John Speakman, British biologist working at the University of Aberdeen
Thomas Speakman Barnett (1909–2003), politician born in Red Deer, Alberta, Canada