Jaakko Tapio Tallus (born 23 February 1981 in Lieksa) is a nordic combined athlete from Finland who won gold (4 x 5 km team) and silver (15 km individual) medals at the 2002 Winter Olympics and a bronze (4 x 5 km team) medal at the 2006 Winter Olympics. He also earned three medals at the FIS Nordic World Ski Championships in the 4 x 5 km team events with one gold (2007) and two bronze (2001, 2003).
Tallus has three individual career victories, all earned in Finland in 1998. He also has three World Cup victories in team events between 2001 and 2007.