Social philosophy is the philosophical study of questions about social behavior (typically, of humans). Social philosophy addresses a wide range of subjects, from individual meanings to legitimacy of laws, from the social contract to criteria for revolution, from the functions of everyday actions to the effects of science on culture, from changes in human demographics to the collective order of a wasp's nest.
There is often a considerable overlap between the questions addressed by social philosophy and ethics or value theory. Other forms of social philosophy include political philosophy and jurisprudence, which are largely concerned with the societies of state and government and their functioning.
Social philosophy, ethics, and political philosophy all share intimate connections with other disciplines in the social sciences. In turn, the social sciences themselves are of focal interest to the philosophy of social science.
The philosophy of language and social epistemology are subfields which overlap in significant ways with social philosophy.
Some of the topics dealt with by social philosophy are:
Social philosophers 
A list of philosophers that have concerned themselves, although most of them not exclusively, with social philosophy:
See also