The term neo-Confederacy is used to describe twentieth and twenty-first century revivals of pro-Confederate sentiment in the United States. Strongly nativist and advocating measures to end immigration, neo-Confederacy claims to pursue Christianity and heritage and other supposedly fundamental values that modern Americans are seen to have abandoned.

Neo-Confederacy also incorporates advocacy of traditional gender roles, is hostile towards democracy, strongly opposes homosexuality, and exhibits an understanding of race that favors segregation and suggests white supremacy. In many cases, neo-Confederates are openly secessionist.

Neo-Confederacy has applied to groups including the United Daughters of the Confederacy of the 1920s and those resisting racial integration in the 1950s and 1960s. In its most recent iteration, neo-Confederacy is used by both proponents and critics to describe a belief system that has emerged since the early-1980s in publications like Southern Partisan, Chronicles, and Southern Mercury, and in organizations including the League of the South, the Council of Conservative Citizens and the Sons of Confederate Veterans.

Overall, it is a reactionary conservative ideology that has made inroads into the Republican Party from the political right, and overlaps with the views of white nationalists and other more radical extremist groups.