The 7th International Conference on Atomic and Molecular Data and Their Applications (ICAMDATA2010) held in Vilnius, Lithuania, on September 21-24, 2010, has reflected new tendencies, challenges and opportunities in atomic and molecular physics as well as in astrophysics and the relevant technological domains. It has demonstrated the practical importance of international scientific dialogue, exchange of best practice and the coordination of research. It has provided a forum for interaction of atomic and molecular data producers and users. The Conference reviewed the topics of experimental and theoretical methods for atomic and molecular data generation, assessment and dissemination, activities of data centers and databases as well as the needs and applications of such data in astrophysics, fusion, laboratory and industrial plasmas, lighting sciences and technologies, biomedicine and biophysics, combustion and environmental sciences as well as the relevant technologies, surface physics, optics and spectroscopy, optoelectronics, etc. The Proceedings reflect the state of the art in this field and provide a wealth of valuable information on atomic and molecular data availability and accuracy as well as on their producers and users. They will be of interest for a large variety of scientists and practitioners, involved in fundamental research and/or technological applications.