Commander Harold Godfrey Lowe RD RNR (21 November 1882 – 12 May 1944) was the Fifth Officer of the RMS Titanic.

Harold Lowe was born in Eglwys Rhos, Caernarfonshire, North Wales on 21 November 1882, the third of eight children, born to George and Harriet Lowe. His father had ambitions for him to be apprentice to a successful Liverpool businessman, but Harold Lowe was determined to go to sea. At 14, he ran away from his home in Barmouth where he had attended school and joined the merchant navy, serving along the West African Coast. Lowe started as a Ship's Boy aboard the Welsh coastal schooners as he worked to attain his certifications. In 1906, he passed his certification and gained his second mate's certificate, then in 1908, he attained his first mate's certificate. By the time he started with the White Star Line, in 1911, he had gained his Master's certificate and, in his own words, "experience with pretty well every ship afloat – the different classes of ships afloat – from the schooner to the square-rigged sailing vessel, and from that to steamships, and of all sizes." He served as third officer on White Star's the Belgic and the Tropic before being transferred to the Titanic as Fifth Officer in 1912. Despite his numerous years at sea, however, the maiden voyage of the Titanic was to be his first transatlantic crossing.