Saara Elisa Niemi, née Tuominen (born 1 January 1986 in Ylöjärvi) is a Finnish ice hockey player.
At the 2006 Torino Olympics, Tuominen competed for Finland.
scoring one goal and four assists.
She was an assistant captain for Finland's women's ice hockey team at the 2010 Winter Olympics in Vancouver where the Finns won the bronze medal.
She graduated in 2010 from the University of Minnesota Duluth (UMD) and was a three-year captain for the UMD Bulldogs, NCAA Division I national champions in 2001, 2002, 2003, 2008 and 2010.
She was a 2009 and 2010 WCHA All-Academic Team member, a 2008 All-WCHA Third Team selection and a member of the 2007 All-WCHA Rookie Team.