The 42nd International Colloquium on Automata, Languages, and Programming (ICALP 2015) will take place in the period 6-10 July 2015 in Kyoto, Japan. The conference will co-locate with LICS 2015, the 30th ACM/IEEE Symposium on Logic in Computer Science. The ICALP 2015 conference chair is Kazuo Iwama (Kyoto University). ICALP is the main conference and annual meeting of the European Association for Theoretical Computer Science (EATCS). As usual, the main conference will be preceded and/or followed by a series of workshops.