Robert Jacob may refer to:
Robert Jacob (politician) (1879–1944), Canadian politician in the Manitoba legislature Robert Jacob (physician) (died 1588), English physician Sir Robert Jacobe (1573–1618), or Jacob, English-born lawyer in Ireland Robert Jacob Shipyard, shipbuilder located at City Island, New York; later a part of Consolidated Shipbuilding Robin Jacob (born 1941), real name Robert Jacob, English judge Robert "Bob" Jacob, founder of defunct company Cinemaware Robert J. K. Jacob, American computer scientist and professor at Tufts University