Josefa Idem married Guerrini (born 23 September 1964) is an Italian sprint canoer turned politician. Competing in eight Summer Olympics, she has five medals. Winning 35 international medals during her career, Idem was the first Italian woman to win World Championships (22 total, five gold) and Olympic medals in canoe sprint. At the 2009 world championships, she became the oldest medalist in the history of the world championships.

After her retirement, she was elected in 2013 as member of the Italian Parliament for the Democratic Party, and successively named Minister for Equal Opportunities, Sport and Youth Policies as part of the cabinet of Enrico Letta. On 24 June 2013, she resigned from the charge because of judicial investigation on allegedly unpaid taxes.