"It's clear that these concepts are deeply linked to organized hate groups and have no place on our services," the social network said in a statement.
"Going forward, while people will still be able to demonstrate pride in their ethnic heritage, we will not tolerate praise or support for white nationalism and separatism," Facebook said.
People who enter search terms associated with white supremacy will get results referring them to resources such as Life After Hate which focus on helping people turn their backs on such groups, according to the social network.
Amid pressure from governments around the world, Facebook in the past few years has ramped up machine learning and artificial intelligence tools for finding and removing hateful content while remaining open to free expression.
"Unfortunately, there will always be people who try to game our systems to spread hate," Facebook said.
"Our challenge is to stay ahead by continuing to improve our technologies, evolve our policies and work with experts who can bolster our own efforts."
Facebook said the new ban would not apply to topics such as American pride and Basque separatism, which "are an important part of people's identity," according to the statement.
(Only the headline and picture of this report may have been reworked by the Business Standard staff; the rest of the content is auto-generated from a syndicated feed.)