Robert Bruce Spencer (born February 27, 1962) is an American anti-Muslim author and blogger.
Spencer describes himself as "the 'good' kind of Islamophobe".
He has published a number of books, including two New York Times bestsellers.
In 2003 he founded and has since directed Jihad Watch, an anti-Muslim blog.
He co-founded the anti-Muslim group Stop Islamization of America (American Freedom Defense Initiative) with blogger Pamela Geller.
Reports that two of Spencer's books were listed in FBI training materials and that he had given seminars to various law enforcement units in the United States stirred controversy.
He has frequently appeared on Fox News.
In 2013 the UK Home Office barred Spencer from travel to the UK for 3 to 5 years for "making statements that may foster hatred that might lead to inter-community violence".