Relevant ethical theories in public administration for UPSC include utilitarianism, deontology, and virtue ethics. Utilitarianism emphasizes outcomes and the greatest good for the greatest number, which is essential when making policy decisions. Deontological ethics focuses on duty and moral obligations, guiding public servants toward fulfilling their roles ethically. Virtue ethics stresses the importance of character and integrity in public service. Understanding these theories helps candidates analyze ethical dilemmas and make informed, principled decisions in governance, reflecting the ethical standards expected in public administration.