Sven Otto "Sleven" Säfwenberg (born May 21, 1898 Uppsala, died January 15, 1950 in Gävle, Sweden) was a Swedish bandy goaltender. Säfwenberg underwent education in Påhlmans Handelsinstitut, Stockholm, in 1923 and then had various jobs in the sports equipment industry in Germany, Czechoslovakia and Sweden during 1920-27. In 1927 he started in own-account the production and sale of bandy sticks and balls. Säfwenber earned the Svenska Dagbladet Gold Medal in 1933. This is still the only awarded medal in bandy. Sven Säfwenberg was also awarded the Stora Grabbars Märke in bandy with number 1.