Research attempts to explore the information about the role of Public Relations (PR) played by governmental and private practitioners it based on five factors suggested by Moss and De Santo. Research uses quantitative approach and examines 300 PR practitioners of government and private who are arranged within the association of Indonesian Public Relations (BPP PERHUMAS). Data collection method is survey. T-test is conducted to compare of Public Relations role between government and private. Result of data analysis shows a significant difference between both on several factors such as Issues Management Expert, Troubleshooting/Problem Solver and Communication Technician. Not quite significant difference is found in some factors such as monitoring and evaluation, and also key policy and strategy advisor.