W:m Crichton & C:o Ab is a former engineering and shipbuilding company that operated in Turku, Grand Duchy of Finland in 1842–1913. The company also had another shipyard in Okhta, Saint Petersburg. The company was founded as Cowie & Eriksson. At the beginning it produced steam engines, boilers and other engineering products. William Crichton became owner in 1862 and the company was named W:m Crichton & C:o The first shipbuilding slipway was constructed in 1864. The company became the biggest employer of Turku after acquiring the nearby yard Åbo Skeppswarf in 1883.