The Thirteenth Asian Logic Conference will be held in Guangzhou from September 16 to 20, 2013. The Asian Logic Conference series is sponsored by the Association for Symbolic Logic and the meetings are major international events in mathematical logic. The series features the latest scientific developments in the fields in mathematical logic and applications, logic in computer science, and philosophical logics. It also aims at promoting activities of mathematical logic in the Asia-Pacific region and bringing logicians both from within Asia and elsewhere together to exchange information and ideas. From 1981 to 2008, the Asian Logic Conference has been held triennially and rotated among countries in the Asia-Pacific region. The previous meetings took place in Singapore (1981), Bangkok (1984), Beijing (1987), Tokyo (1990), Singapore (1993), Beijing (1996), Hsi-Tou (1999), Chongqing (2002), Novosibirsk (2005) and Kobe (2008). In year 2008, the East Asian and Australasia Committees of the Association of Symbolic Logic decided to shorten the three year cycle to two. The new cycle of ALC started in Singapore (2009), Wellington(2011).