FAGS
Fellow of the American Geographical Society

FAII
Fellow of the Australian Insurance Institute

FBA
Fellow of the British Academy

FBOA
Fellow of the British Optical Association

FBS
Fellow of the Botanical Society

FCII
Fellow of the Chartered Insurance Institute

FCS
Fellow of the Chemical Society

fellow
poor fellow!

FES
Fellow of the Entomological Society

FFA
Fellow of the Faculty of Actuaries

FFR
Fellow of the Faculty of Radiologists

FGS
Fellow of the Geological Society

FIJ
Fellow of the Institute of Journalists

FIS
Fellow of the Institute of Surveyors

FISA
Fellow of the Incorporated Secretaries Association

FLA
Fellow of the Library Association

FLS
Fellow of the Linnean Society

FPS
Fellow of the Philological Society

FRAI
Fellow of the Royal Anthropological Institute

FRAS
Fellow of the Royal Asiatic Society

FRGS
Fellow of the Royal Geographical Society

FRHS
Fellow of the Royal Horticultural Society

FRNS
Fellow of the Royal Numismatic Society

FRPS
Fellow of the Royal Photographic Society

FRS
Fellow of the Royal Society

FRSL
Fellow of the Royal Society of Literature

FRSS
Fellow of the Royal Statistical Society

FSA
Fellow of the Society of Antiquaries

FSE
Fellow of the Society of Engineers

FZS
Fellow of the Zoological Society