String phenomenology offers a bridge between the excitement and novelty that typified theoretical physics in recent years and experimental reality. The First International Conference on String Phenomenology concentrated on cosmological and phenomenologically oriented applications of string theory. The aim was to bring together experimental and theoretical physicists to discuss the triumphs and challenges that high energy physics faces in its attempt to uncover the next layers of fundamental matter and interactions. The main theme was the application of string theory, but the conference also accommodated alternative approaches to physics beyond the Standard Model. The conference featured plenary talks reviewing the major topics, as well as parallel sessions for contributed papers describing new results in the major areas of the conference. It covered diverse topics, from collider and neutrino physics to fibre bundles on Calabi–Yau three folds.