"This volume contains a collection of articles presented at a conference on Automorphic Forms and Zeta Functions in memory of Tsuneo Arakawa, an eminent researcher in modular forms in several variables and zeta functions. The book begins with a review of his works, followed by 16 articles by experts in the fields." This collection of papers illustrates Arakawa's contributions and the current trends in modular forms in several variables and related zeta functions.