The Theory and Experiment in High Energy Physics in Bratislava is the first of the series of four V4-HEP workshops. These workshops focus on exchanging the latest results in theoretical and experimental particle physics in the Visegrad region. The workshop topics will include theory and experiment in heavy ion collisions, new results from collider experiments, perturbative calculations in QCD, neutrinos and grand unification, and particle physics applications in cosmology. The workshop is primarily dedicated to participants affiliated with the Visegrad Region (Czech Republic, Hungary, Poland, and Slovakia).