The 8th International Young Researchers Workshop on Geometry, Mechanics and Control will be the eighth in a series of workshops that have previously taken place in Madrid (2006, 2007, 2012), Barcelona (2008), Ghent (2009), La Laguna (2010) and Coimbra (2012). Its goal is to bring together young researchers working in geometric mechanics and control theory and to offer a platform to present the results of their research to an international audience. The core of the workshop consists on 3 mini-courses, of 4 hours each, which serve as an introduction to different topics related to geometric structures in mechanics and control theory. The courses will be at a PhD and postdoctoral level, and it is expected that the young researchers will be, at the end of the workshop, able to access to the recent literature on the corresponding topics. Along with the courses, there will be contributed short talks (30 minutes) and a poster session. Attendance is, of course, open to anyone, but in particular young researchers (PhD-students, recent PhD's) are encouraged to submit or poster proposal.