Organizations
Society of Women Writers and Journalists
Society of Wood Engravers
Soho Bazaar
Soho Poly
Soho Theatre Company
Soil Association
Soldiers of Destiny
Soldiers' Homes
Soldiers', Sailors' and Airmen's Families Association
Solemn League and Covenant
Solidarity
Solihull Metropolitan Borough Council
Solihull Public Library
Soma
Somali Youth League
Somers Islands Company
Somerset House
Somerville Club
Somerville College, Oxford University
Something Else Press
Sono Nis Press
Sons of Africa
Sons of Queensbury
Sons of Temperance
Sony
Sorbonne, University of Paris
Sorosis
Sörözö
Sort of Books
SOS Racisme
Sotheby
Source Book Press
South African Communist Party
South African House of Representatives
South African Liberal Party
South African Student Movement
South Bank Centre
South Hampstead School for Girls
South Illinois University
South London Hospital for Women
South London Hospital for Women and Children
South Manchester Primrose Habitation
South Place Ethical Society
South Place Institute
South Sea Company
South Wales Printing and Publishing Company
South Wales Railway
South-East Asia Treaty Organization
Southall Black Sisters
Southall, Barclay, and Company