William G. Andrew (January 25, 1886 – May 6, 1965) was an American attorney and politician who was a member of the Middlesex County, Massachusetts county commission from 1945 to 1965 and interim district attorney of Middlesex County from 1938 to 1939.
Andrew was a special assistant district attorney under Arthur Kenneth Reading and first assistant district attorney under Warren L. Bishop.[3][4] After Robert F. Bradford defeated Bishop in the Republican primary, Bishop backed Democrat Joseph V. Carroll. As a result, Andrew resigned from the DAs office and endorsed Bradford. Bishop unexpectedly resigned on November 23, 1938 and, at Bishop's request, Governor Charles F. Hurley appointed Andrew to finish the final months of the district attorney's term.[5]