Tanja Tuulia Poutiainen is a retired World Cup alpine ski racer from Finland. She specialized in the technical events of slalom and giant slalom, and was the silver medalist in the women's giant slalom at the 2006 Winter Olympics in Torino.

Giant slalom (GS) is an alpine skiing and alpine snowboarding competitive discipline. It involves racing between sets of poles ("gates") spaced at a greater distance from each other than in slalom but less than in Super-G.