• OB star
  OB star
  OB stars are hot, massive stars of spectral types O or B which form in loosely organized groups called OB associations. They are short lived, and thus don't move very far from where they were formed within their life. During their lifetime, they will emit copious amounts of ultraviolet radiation...
  
  , in astronomy, a hot, massive star of spectral types O or B
• Ocean Beach, San Diego, a neighborhood of San Diego, California, United States
• Odense Boldklub, a Danish football club
• Old Badmintonians
  Old Badmintonians
  Alumnae of Badminton School are known as Old Badmintonians or OBsBadminton School is an independent, boarding and day school for girls aged 3 to 18 years situated in Westbury-on-Trym, Bristol, England.-Notable OBs:* Claire Bloom - actress...
  
  , former pupils of Badminton School, Bristol, England
• Old Bedfordians, former pupils of Bedford School
  Bedford School
  Bedford School is not to be confused with Bedford Modern School or Bedford High School or Old Bedford School in Bedford, TexasBedford School is an HMC independent school for boys located in the town of Bedford, England, United Kingdom...
  
  , England
• Old Bristolians, former pupils of Bristol Grammar School, England
• Organizational behaviour, an academic field of study
• Oriental Brewery
  Oriental Brewery
  Oriental Brewery or OB is a South Korean brewery established by the Doosan Group in 1952. It was purchased by InBev in 1998. In 2009, it was sold by Anheuser-Busch InBev as the parent company sought to reduce its debt. It was sold to an affiliate of Kohlberg Kravis Roberts & Co....
  
  , a South Korean brewery, which produces the OB lagers
• Outside broadcasting
  Outside broadcasting
  Outside broadcasting is the electronic field production of television or radio programmes from a mobile remote broadcast television studio. Professional video camera and microphone signals come into the production truck for processing, recording and possibly transmission...
  
  , a television broadcasting from a mobile television studio, such as a van
• Outward Bound
  Outward Bound
  Outward Bound is an international, non-profit, independent, outdoor educationorganization with approximately 40 schools around the world and 200,000 participants per year...
  
  , an international outdoor education organization
• Astrakhan Airlines
  Astrakhan Airlines
  Astrakhan Airlines was an airline based in Astrakhan, Russia. It operated scheduled and chartered, domestic and international passenger and cargo flights out of Narimanovo Airport, Astrakhan.- History :...
  
   IATA code
• Boliviana de Aviación
  Boliviana de Aviación
  Boliviana de Aviación or simply called BoA is the state-owned national flag carrier airline of Bolivia along with private airline AeroSur. It was established by the Bolivian Government under the president Evo Morales, replacing the troubled Lloyd Aéreo Boliviano as flag carrier.The airline is...
  
   IATA code
• OB (cartoon), a comic strip by Burton Silver

People known by the initials

• Sam "O.B." O'Brien, a fictional character in the British soap opera Hollyoaks
• Ed O'Bradovich
  Ed O'Bradovich
  Edward O'Bradovich is a former American football defensive end in the NFL. Drafted by the Chicago Bears in the seventh round of the 1962 NFL Draft, he spent his entire ten-year career with the Bears...
  
  , a former Chicago Bears defensive lineman and current Bears postgame host on 670 the Score

See also

• Obstetrics and gynaecology
  Obstetrics and gynaecology
  Obstetrics and gynaecology are the two surgical–medical specialties dealing with the female reproductive organs in their pregnant and non-pregnant state, respectively, and as such are often combined to form a single medical specialty and postgraduate training programme...
  
   (abbreviated OB/GYN)
• Ob (disambiguation)
• Obi (disambiguation)
• Obie (disambiguation)
• OOB (disambiguation)