Australian Police Ministers and Commissioners occupy a pivotal position in the system of law enforcement. Collectively, they are responsible for the general policy, administration and operational direction and control of policing through the Australian States. There has been in the past twenty five years a growing complexity and a variety of problems facing police agencies which are arduous and demanding. Continuing social tension of recent years have given police ministers and commissioners higher public profiles than ever before. The research undertaken in this thesis examines the difficulties experienced between police ministers and commissioners in Queensland and New South Wales from 1970 to 1995. Three models have been developed as a framework to analyse the relationships and how they operate. The three models are called - 'Dependency', 'Independency' and 'Interdependency'. Twenty-one police ministers, commissioners and advisers from Queensland and New South Wales were interviewed during the course of the research. Five separate case studies were developed to analyse and interpret the relationships within the context of the three models. A summary chapter of additional research data provides supporting information which was used to substantiate the case study material. The conclusion argues that relationships operate more effectively when elements of the 'Interdependency' model exist. The need for further debate about the administrative, legal and management elements of the working relationship between a police minister and commissioner is essential to achieve a balance between policy, administration and operational requirements within a modern western democratic policing system.