Sir Richard Trevithick Tangye (24 November 1833 – 14 October 1906) was a British manufacturer of engines and other heavy equipment.
Richard Tangye was born at Illogan, near Redruth, Cornwall, the son of a farmer. As a young boy he worked in the fields, but when he was eight years old he was incapacitated from further manual labour by a fracture of the right arm. His father then determined to give him the best education he could afford, and young Tangye was sent to the Quaker Sidcot School in the Mendip Hills near the village of Winscombe, Somerset, where he progressed rapidly and became a pupil-teacher.
Tangye was not long contented with this position, and through an advertisement in The Friend obtained a clerkship in a small engineering firm in Birmingham, where two of his brothers, skilled mechanics, subsequently joined him. Here Richard Tangye remained four years, obtaining a complete mastery of the details of an engineering business, and introducing the system of a Saturday half-holiday which he had supported on its introduction by John Frearson, the radical Birmingham Engineer. It was subsequently adopted in many English industrial works.