The book contains invited and contributed talks presented at the 1st Asian-Pacific Conference on Few-Body Problems in Physics, held in Tokyo (Japan), August 23-28, 1999. The conference was initiated in the Asian-Pacific area as a counterpart to the successful European and North American conferences. The papers in the volume are grouped into four categories:- Innovative computational and experimental methods to address few-body problems- Structures and interactions of hadrons as few-quark systems dynamics of few-nucleon (hadron) systems- Few-body dynamics in atomic, molecular, and exotic atom/molecular systems, micro-clusters, quantum dots- Novel few-body approaches to unstable nuclei, nuclear astrophysics, and nuclear fusion problems.