Date of Birth: 
About Marlena Jansson
- Marlena Jansson (born 20 November 1970) is a Swedish orienteering competitor.
- She is three times Relay World Champion as a member of the Swedish winning team in 1991, 1993 and 1997, as well as having a silver medal from 1995 and a bronze medal from 1999.
- She also shared bronze with Anna Bogren in the Short distance World Championship in 1995.
- She obtained the first place in the Overall World Cup in 1994 and second one in 1996.
- She is five times individual Swedish Champion (1987, 1990, 1995, 1997 and 1998), and Nordic Relay Champion from 1992.
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