Concerning Civil Government is a work of political philosophy by John Locke. It attacks patriarchalism in the form of sentence-by-sentence refutation of Robert Filmer's Patriarcha, and outlines Locke's ideas for a more civilized society based on natural rights and contract theory. From this, he goes on to explain the hypothetical rise of property and civilization, in the process explaining that the only legitimate governments are those that have the consent of the people. Therefore, any government that rules without the consent of the people can, in theory, be overthrown.

John Locke FRS (29 August 1632 – 28 October 1704), was an English philosopher and physician regarded as one of the most influential of Enlightenment thinkers and known as the "Father of Classical Liberalism". Considered one of the first of the British empiricists, following the tradition of Sir Francis Bacon, he is equally important to social contract theory. His work greatly affected the development of epistemology and political philosophy. His writings influenced Voltaire and Rousseau, many Scottish Enlightenment thinkers, as well as the American revolutionaries. His contributions to classical republicanism and liberal theory are reflected in the United States Declaration of Independence.