The Asia-Pacific Software Engineering Conference (APSEC) has long been established as a premier regional conference that brings together researchers and practitioners from academia, industry and government to share the state of the art and the practice of software engineering, and to explore emerging challenges and solutions in software engineering innovation. APSEC 2020 will continue in the tradition of previous editions of this regional conference. As past APSEC series, the main research track features the most recent and significant innovations in the field of software engineering and all its sub-disciplines. We invite submissions of high quality research papers that describe original and unpublished results on all topics of both theoretical and empirical software engineering research.