Monika Jagaciak Jankic, known professionally as Jac Jagaciak, is a Polish model. After signing with IMG Models in 2007, Jagaciak was given the nickname "Jac" by the agency.

Anna Jagaciak-Michalska is a retired Polish long and triple jumper. She won three medals in total at Summer Universiades. In addition she finished sixth at the 2017 World Championships and just behind the podium at the 2016 European Championships and 2017 European Indoor Championships.