Alf Tjersland (6 September 1881 – 12 June 1955) was a Norwegian engineer and businessperson.
He was born in Kristiania as a son of Abraham Tjersland (1844–1922) and Thora Didrichsen.
He also studied at the Royal Technical College in Glasgow in 1904 and at New York Trade School for plumbers in 1907.
In 1906 he was elected as a member of the American Society of Heating, Ventilating Engineers.
He chaired the trade group in Mekaniske Værksteders Landsforening from 1926 to 1932, and was then vice chairman for one year.