Margaretha (Greta) Zetterberg (1733 – 1803) was a Finnish textile and handcrafts worker who lived her entire life in what was then Sweden. She is regarded as a pioneer within the linen industry in Finland. She was the first female in Finland to be given a financed study trip abroad by the authorities: she was sent to Stockholm to study the textile industry, and brought with her the latest technique, especially within the linen industry, to Borgå in Finland, where she was active.