Rentmeister's work is in numerous collections including the Arp Museum Bahnhof Rolandseck, Remagen, Germany; Kolumba, Cologne, Germany; MARTa Herford, Germany; Museum Boijmans van Beuningen, Rotterdam, Netherlands; Museum für Moderne Kunst, Frankfurt am Main, Germany; Museum Ludwig, Cologne, Germany; Museum Ostwall, Dortmund, Germany; Abteiberg Museum, Mönchengladbach, Germany; Lehmbruck-Museum, Duisburg, Germany