Olav Johannes Strøm (born 25 September 1866 in Grue, died 24 August 1963 in Kvinesdal) was a Norwegian trade union leader, and one of the pioneers of trade unions in Norway. He worked as a young man at a brickyard, and in 1886, founded the first trade union for brickyard workers in Kristiania. Later in the 1890s, he worked as a construction worker on the new railway to Brevik, and was active in Skien. There, he got the Labour Party and unions to set up their own municipal programme. When they did not get their own candidates on Venstre's list, they set up their own list.