Sune Wiktor Karlsson (1923–2006) was an international motorcycle speedway rider from Sweden. He earned seven caps for the Sweden national speedway team.
Speedway career Karlsson won two silver medals (1949 and 1952) and one bronze medal (1951) at the Swedish Individual Speedway Championship.
Karlsson rode in the top tier of British Speedway in 1952, riding for New Cross Rangers.
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