William Wesley Halfyard (October 16, 1869 – December 31, 1944) was an educator and political figure in the Colony of Newfoundland. He represented Fogo from 1913 to 1919, Trinity Bay from 1919 to 1928 and Trinity North from 1928 to 1932 in the Newfoundland House of Academy. Halfyard also served as vice-president of the Union Trading Company, as a member of the board of governors for St. John's General Hospital and as a director of the Government Savings Bank. In 1909, he married Margaret Mary Diamond. He died at home in St. John's at the age of 75.