This special issue of Engineering Applications of Artificial Intelligence on 'Constraint Satisfaction Techniques for Planning and Scheduling Problems' compiles a selection of papers of COPLAS'07: the joint CP/ICAPS-2007 workshop of the same name and presents novel issues on planning, scheduling, constraint programming/constraint satisfaction problems (CSPs) and many other common areas that exist among them. On the whole, this issue mainly focus on managing complex problems where planning, scheduling and constraint satisfaction must be combined and/or interrelated, which entails an enormous potential for practical applications and future research.