The Biographical Dictionary of the Extreme Right Since 1890 is a reference book by Philip Rees, on leading people in the various far right movements since 1890.

It contains entries for what the author regards as "the 500 major figures on the radical right, extreme right, and revolutionary right from 1890 to the present" (publisher's blurb).

In the introduction Rees discusses his criterion for inclusion in the book.

He describes the extreme right as "opposed to parliamentary forms of democratic representation and hostile to pluralism.

"(xvii) Among those it covers are Argentinian nationalists, Mexican sinarquistas, American nativist demagogues, Brazilian Integralists, German National Socialists, Portuguese National Syndicalists, Spanish Falangists, and Belgian Rexists.