This study examined Public Procurement Law and efficiency of Public Service in Nasarawa State, Nigeria. The study specifically examined the effect of compliance with public procurement law, implementation of public procurement law, professionalism in public procurement processes and accountability in public procurement processes on efficiency of public service in Nasarawa State. The study adopted cross sectional and correlational survey designs. The target population was of the study was 161 public servants drawn from 14 MDAs in Nasararwa State. Census approach was adopted since the population was small and manageable. Self-administered structured questionnaire were used as the major instrument for data collection. Data collected were analysed using descriptive statistics and presented in form of tables, frequencies, simple percentage, means and standard deviations while t statistics in multiple regression was employed to test the study hypotheses at 95% level of. of hypotheses. Findings of the study revealed that compliance with public procurement law, implementation of public procurement law, professionalism in public procurement processes and accountability in public procurement processes on performance of public service in Nasarawa State. The study concludes that public procurement law has significant positive effect on efficiency of public service in Nasarawa State, Nigeria. The study recommends among others that MDAs in Nasarawa State should strengthen enforcement mechanisms and establish dedicated monitoring bodies to ensure that procurement laws are adhered to rigorously at all levels of procurement.