Sebastian Stock (born 15 November 1977 in Immenstadt, Bavaria) is a German curler living in Bönigen, Switzerland.
In 1995 he played third for Daniel Herberg and they lost to Tom Brewster, Jr.'s Scotland team in the final.
In 2002 Stock and his German team captured their first European Curling Championships after three previous tries.
Earlier that year Stock skipped Germany to a sixth-place finish at the 2002 Winter Olympics.
In 2004, Stock lost to Lindholm in the finals of the 2004 Ford World Curling Championships.