The International Workshop series on Empirical Requirements Engineering (EmpiRE) aims to increase the cross-fertilization of Empirical Software Engineering (ESE) methods and Requirements Engineering (RE) by actively encouraging the exchange of ideas to understand why and how the empirical methods from ESE can help assess and improve existing or new approaches in RE. The 5th EmpiRE workshop’s goals are to open up the inter-disciplinary debate on the steadily moving frontiers in empirical RE, to help leverage past investments in empirical RE studies to strengthen interdisciplinary collaboration, and to extend the network of practitioners and researchers involved in empirical RE studies.