Компании (начиная с алфавита) - O
  
O A Services - oi play school
  
Oil and Natural Gas Corporation Ltd. - OMR India Outsources Pvt Ltd
  
OMS DEALS - Opel Consulting Pvt Ltd
  
Open InfoTech - Orbital Project and Services LLC
  
Orbmix It Solutions - OSource India Pvt. LTd
  
OSP Labs Pvt Ltd - Ozone Overseas Pvt Ltd