This report documents the program and the outcomes of Dagstuhl Seminar 12011 on the ``Foundations for Scripting Languages\u27\u27. The choice of ``for\u27\u27 rather than ``of\u27\u27 is intentional: it is our thesis that scripting languages are in need of foundations to support their extensive use but lack them, and we hope this event consolidated and advanced the state of the art in this direction