Thomas Andrews Jr. (7 February 1873 – 15 April 1912) was a British businessman and shipbuilder. He was managing director and head of the drafting department of the shipbuilding company Harland and Wolff in Belfast, Ireland. He was the naval architect in charge of the plans for the ocean liner Titanic and perished along with more than 1,500 others when the ship sank during her maiden voyage.