Johan ("John") Waldemar Mattsson (November 5, 1894 – September 1, 1969) was a Swedish track and field athlete who competed in the 1920 Summer Olympics. In 1920 he finished ninth in the pole vault competition.

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External links
Profile 

1894 births
1969 deaths
Swedish male pole vaulters
Olympic athletes for Sweden
Athletes (track and field) at the 1920 Summer Olympics