Date of Birth: 
About Harald Maartmann
- Harald Rolf Maartmann (born January 5, 1926) was a Norwegian cross country skier who competed in the 1950s.
- He won both the 17 km and the 50 km event in the Norwegian Championships in 1950.
- He finished fifth in the 50 km event at the 1950 World Championships in Lake Placid, New York.
- Maartmann also finished eighth in the 50 km event at the 1952 Winter Olympics in Oslo.
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