 At the World Championship level, she was twice a world bronze medalist as an individual (2010 and 2011), she was part of the Korean team that won the team world championship in 2005.Nam was also part of the Korean teams that won the bronze medal in the foil team event at the 2006 World Fencing Championships, after beating Poland in the bronze medal match with her teammates Jeon, Jung and Seo Mi-Jung, 2010 World Championships, beating Germany with teammates Jeon, Seo and Oh, and the 2011 World Championship, beating Poland again, this time with teammates Jeon, Jung and Lee Hye-Sun.She was chosen to give the athlete's oath at the 2014 Asian Games.