Steffen Kjærgaard (born 24 May 1973 in Tønsberg) is a former Norwegian professional cyclist. Kjærgaard cycled for US Postal Service (2000–2003). He twice participated in the Tour de France, taking 89th place in 2000 and 101st place in 2001; in both years team captain Lance Armstrong won overall. Known as a strong time-trial cyclist, Kjærgaard won the overall World Cup in track cycling in 1993.
Kjærgaard has won 12 Nordic Championship (Nordiska mesterskap) gold medals and three King's Cups (kongepokaler). Currently he is director of sport for the Norwegian Cycling Federation. Kjærgaard is married and has two children.