On behalf of the Organizing Committee, I would like to invite all of the engineers on the LSI design and design automation areas to the 20-th Asia and South Pacific Design Automation Conference (ASP-DAC 2015). ASP-DAC 2015 will be held from January 19th (Mon.) to January 22nd (Thur.), 2015 at Makuhari Messe, Chiba, Japan. ASP-DAC 2015 is a high-quality and premium conference on Electronic Design Automation (EDA) area like other sister conferences such as Design Automation Conference (DAC), Design, Automation & Test in Europe (DATE), and International Conference on Computer Aided Design (ICCAD). ASP-DAC has been started at 1995 and continuously offers the opportunity to know the recent advanced technologies on LSI design and design automation areas, and to communicate each other for researchers and designers around Asia and South Pacific regions. The conference site is Makuhari Messe, which is one of the biggest international convention complexes in Japan and a memorable place where the first ASP-DAC was held in 1995. Hundreds of companies are accumulated around the complex, and big events on various industrial fields including semiconductor and electronics are held every year. As Makuhari Messe is close to Tokyo, about 30 minutes by train, you can easily access the venue from Narita or Haneda international airport. Joining the conference and participating in technological discussions, you can also enjoy many attractions in Tokyo area, such as Tokyo Disneyland, the world-highest tower called Tokyo Sky Tree, Akihabara, etc. ASP-DAC 2015 received 318 submissions from 27 countries all over the world. Based on rigorous and thorough reviews and a full-day face-to-face meeting by the Technical Program Committee, 106 papers have been accepted and 26 technical sessions have been organized. 5 Special Sessions have also been organized based on invited talks by the Technical Program Committee. We have arranged 3 Keynote speakers at the beginning of each day to know the future directions of this area. The first Keynote speaker Dr. Udo Wolz, Executive Vice President of Bosch, will talk about "The required technologies for Automotive towards 2020". The second Keynote speaker Dr. Atsushi Takahara, Director of NTT Network Innovation Laboratories, will introduce future "Programmable Network" technologies. The third keynote speech will be from Dr. Noriko Arai, Professor of National Institute of Informatics. "When and how will an AI be smart enough to design?" will be discueed in her talk. The Designers' Forum is a unique program that will share design experience and solutions of actual product designs of the industries. This year's program includes the invited talks on the next generation car electronics and 4K/8K TV technologies, and also includes panel disussions on data-centric computing platform and IP-based SoC design and IP design innovations. The University Design Contest is also an important annual event of ASP-DAC where more than 20 high-quality designs all including actual silicon proof were selected for presentation at Tuesday, January 20. Six tutorials have been arranged on Monday, January 19. Each tutorial has 2 hour presentation, and will be held 2 times. Registrants can take any 3 of 6 tutorials with the reduced tutorial fee depending on their interests and can obtain wider perspective on the recent hot topics on FD-SOI, Leading-Edge Lithography and TCAD, Normally-Off Computing, Hardware Trust in VLSI Design and Implementation, High-Level Synthesis for FPGAs, Electric Design Automation for Nanotechnologies. ASP-DAC 2015 offers you an ideal opportunity to touch the recent technologies and the future directions on the LSI design and design automation areas. You will be able to meet and discuss with a lot of researchers and designers on this area, so please do not miss ASP-DAC 2015. Finally, we would like to express our sincere appreciation to sponsors and supporters.