HSOB

HSOB may refer to one of many things:


 * El Obeid Airport, in Sudan, has the ICAO code HSOB
 * High School Old Boys the name of many sporting and alumni organisations, among them:
 * Cardiff HSOB RFC, a Welsh rugby union club
 * Christchurch High School Old Boys, a New Zealand football club
 * Douglas High School Old Boys A.F.C., a Manx football club
 * Dunedin High School Old Boys, a defunct New Zealand football club
 * High School Old Boys RFC, a New Zealand rugby union club
 * Invercargill High School Old Boys, a defunct New Zealand football club
 * Melbourne High School Old Boys Association, an Australian sporting and alumni organisation
 * Napier High School Old Boys, a defunct New Zealand football club
 * Newport HSOB RFC, a Welsh rugby union club