Samppa Lajunen (born 23 April 1979 in Turku) is a retired Finnish Nordic combined athlete who competed during the late 1990s and early 2000s.

A winner of five Winter Olympic Games medals, his career highlight came at the 2002 Winter Olympics in Salt Lake City when Lajunen won all three gold medals in the Nordic combined events.

Lajunen also found success at the FIS Nordic World Ski Championships, winning eight medals.

In the spring of 2007 he graduated with a Master's degree in Economics and Business Administration and runs a real estate investment company called Samla Capital Oy.

This biographical article relating to Finnish ski jumping is a stub.