The term Left Rothbardianism is usually used by agorists and other libertarians that identify themselves with market anarchism as opposed to more conservative libertarian elements of minarchism, conservativism, and objectivism to give themselves a separate category in accordance with the broader libertarian movement.

In the official form, there exists no real Right Rothbardian perspective as Rothbard himself placed libertarianism on the far left spectrum. The use of the term Left Rothbardian merely means to differentiate those that would call themselves market anarchists in the steps of Rothbard and those that would call themselves minarchists and conservative libertarians with influence from Rothbard.

Left Rothbardianism also differentiates from pure anarcho-capitalism with a differentiation in approach. Whereas left Rothbardians will accept a broader array of left-libertarians as comrades, anarcho-capitalists tend to shun them with a distaste for anyone that does not accept state-capitalism with free-market rhetoric.

As a general rule of thumb, left-Rothbardians tend to rely more on Rothbard's work from his period of alliance with the New Left in the late 1960's. Strictly speaking though, that period of his work was not particularly different in actual ideology so much as it was simply more left-oriented in rhetorical expression.

Properly understood, all agorists are left-Rothbardians, but not all left-Rothbardians are necessarily agorists. One can be a left-Rothbardian while not accepting Konkin's theory of revolution in the New Libertarian Manifesto. However, generally speaking the use of the term left-Rothbardian is usually excluded to Agorists wishing to differentiate themselves from conservative libertarians.