Benjamin Winslow Harris (November 10, 1823 – February 7, 1907) was a nineteenth-century politician, lawyer and judge from Massachusetts. He was the father of Robert Orr Harris. Born in East Bridgewater, Massachusetts, Harris pursued an academic course at Phillips Academy, Andover, graduating in 1847. He graduated from Dane Law School of Harvard University in 1849. He was admitted to the bar in Boston, Massachusetts in 1850, commencing practice in East Bridgewater. He served in the Massachusetts Senate in 1857, was a member of the Massachusetts House of Representatives in 1858, was district attorney for the southeastern district of Massachusetts from 1858 to 1866 and was collector of internal revenue for the second district of Massachusetts from 1866 to 1873.