Spain has been leading several initiatives and surveys and has remarkably increased its participation in international collaborations in observational cosmology in recent years. There is also growing interest in theoretical cosmology. We aim to gather researchers in Spain who are leading research in observational and theoretical cosmology for the small workshop CosmoRENATA in Valencia, and discuss our challenges and opportunities for the future, in preparation for the meeting of the whole Renata network that will take place at IFT in Madrid, on October 2 to 4 of 2013. The workshop CosmoRENATA will take place in Valencia on June 3-4, 2013. The conference venue will be the Salón de Actos del Edifico de Cabecera del Parc Científic en Paterna.