Philosophy of Physics: 5]1 Questions is a collection of short interviews based on 5 questions presented to some of the most influential and prominent scholars in the field. We hear their views on philosophy of physics, the aim, the scope, the future direction of research and how their work fits in these respects. Interviews with Frank Arntzenius, Guido Bacciagaluppi, Mario Bunge, John Earman, Brigitte Falkenburg, Steven French, Nick Hugget, Arthur Fine, Chuang Liu, Tim Maudlin, John D. Norton, Laurent Nottale, Roland Omnes, Carlo Rovelli, Lawrence Sklar, Paul Teller, Steve Weinstein.