The Invest in Szczecin Open (formerly Pekao Szczecin Open) is a professional tennis tournament played on outdoor clay courts. It is currently part of the Association of Tennis Professionals (ATP) Challenger Tour. It was part of the Tretorn SERIE+ on the Challenger Tour. It is held annually at the Wojska Polskiego in Szczecin, Poland, since 1993 (as a Satellite from 1993 to 1995, as a Challenger since 1996).