Oskar Woldemar Pihl (11 February 1890 in Moscow – 22 August 1959 in Helsinki) was a Finnish silversmith and Fabergé workmaster, born in the Russian Empire, brother of Alma Pihl. He was the son of Knut Oskar Pihl [fi] and of the daughter of August Holmström, Fanny Holmström (1869–1949). Workmaster in August Holmström's workshop, he made small items such as enameled tie pins. His hallmark is OP.