Milano-club writes on its website. 33-year-old Olivia Schough has signed until June 30, 2026.
Inter is currently second in Serie A football, seven points behind league leader Juventus.
Schough leaves the reigning champion Rosengård after four seasons. Last year, she was Malmö-team's sharpest attacker with ten goals and as many assists.
Olivia Schough has made 110 A-international appearances and scored 13 goals since her national team debut in 2013.
Rosengård has lost many influential players since the team's national championship title last autumn. In addition to Schough, also Momoko Tanikawa, Olivia Holdt, Rebecca Knaak, and Sofie Bredgaard. Moreover, Caroline Seger has retired.