This article compares the individuals categorized as 20th century philosophers in Wikipedia with the selection found in two major edited and widely used online philosophy resources, The Stanford Encyclopaedia of Philosophy (plato.stanford.edu), and the Internet Encyclopedia of Philosophy (www.iep.utm.edu). These are both free online resources, but unlike Wikipedia, they are written and edited by members of the academic community, and thus sanctioned by the established communities. The individuals presented as 20th century philosophers are compared along the parameters of year of birth, gender, and national and disciplinary backgrounds. The results show that although the types of academics listed in Wikipedia are generally similar to those i...