Katarzyna Juszczak married Schillaci[2] (born 4 March 1972 in Wrocław) is a retired amateur Polish-born Italian judoka and freestyle wrestler, who competed in the women's heavyweight category.

[4] Starting her sporting career as a judoka for AZS-AWF Wrocław, Juszczak made her official debut at the 1992 Summer Olympics in Barcelona, where she competed in the women's 72 kg division.

She ousted Ecuador's María Cangá in her opening match, before losing out to eventual Olympic champion Kim Mi-jung of South Korea by a powerful ippon within ten seconds.

[6][7] She lost two straight matches each to eventual Olympic champion Wang Xu of China (0–5) and Canada's Christine Nordhagen (2–5), that left her on the bottom of the prelim pool, placing eleventh in the final standings.

[1] In 2005, after the death of her husband,[10] she remained to live and work in the sporting environment in the city of Messina, later she married the former Italian Olympic wrestler Giovanni Schillaci, and together they trained their daughter Carolina Costa,[11] who in 2019 is qualified in the judo at the 2020 Summer Paralympics.