The Esperantic Studies Foundation, abbreviated ESF, is a non-profit organisation initiated in 1968 by Jonathan Pool, E. James Lieberman and Humphrey Tonkin, with the aim to further the understanding and practice of linguistic justice in a multicultural world, with a special focus on the study of interlinguistics and the role of Esperanto.
Under the banner "For linguistic justice in a multicultural world," ESF supports education and research programs that promote linguistic justice and equality. ESF aims to create environments in which languages are treated as equal and communication occurs in a non-discriminatory manner and to develop and support excellence in scholarship, education and interlingual communication.[1] Its priorities and values are shaped through engagement with the worldwide community of Esperanto speakers, as well as with researchers, educators and activists in many language-related fields.[2] ESF's current president is Humphrey Tonkin.