This essay, found on pages 129-137 of this resource, probes the problem of corruption in non-judicial justice systems (NJJSs), or justice systems that do not involve the courts. It addresses two broad types of NJJS: customary and administrative. The essay also explores how NGOs help to constrain such corruption. It focuses on the Philippines, Bangladesh and Sierra Leone because they offer diverse examples of the problem and the strategies employed by NGOs to address the problems.