American Thinker is a daily online magazine dealing with American politics from a politically conservative viewpoint. It was founded in 2003 by attorney Ed Lasky, health-care consultant Richard Baehr, and sociologist Thomas Lifson, and initially became prominent in the lead-up to the 2008 U.S. presidential election for its attacks on then-candidate Barack Obama.
The magazine has been described as a conservative blog. The Southern Poverty Law Center has called the site "a not so thoughtful far-right online publication".