- Office of the Chief Controller of Accounts, Ministry of Finance
- Odisha Electricity Regulatory Commission (OERC) Tenders
- Odhisha Space Applications Centre (ORSAC)
- Oil and Natural Gas Corporation Ltd (ONGC) Tenders
- Oil India Ltd (OIL) Tenders
- Oil Industry Development Board (OIDB) Tenders
- Oil Industry Safety Directorate (OISD) Tenders
- ONGC Mangalore Petrochemicals Ltd (OMPL) Tenders
- ONGC Petro additions Ltd (OPaL) Tenders
- ONGC Videsh Ltd (ONGC VIDESH) Tenders
- ONGC Tripura Power Company Ltd (OTPC) Tenders
- Ordnance Factory Board
- Oriental Bank of Commerce
- Oriental Insurance Company Ltd Tenders
LISTS TENDER NOTIFICATIONS ISSUED BY THE CENTRAL AND STATE GOVERNMENT MINISTRIES, DEPARTMENTS AND ORGANIZATIONS.INDIAN TENDERS PORTAL, GOVERNMENT TENDERS, CORPORATE TENDERS, PUBLIC TENDERS, PROCUREMENT NOTICES, GLOBAL TENDERS, INDUSTRY TENDERS, TENDER INDIA,ONLINE TENDER, TENDERS, INDIAN TENDERS, INDIAN TENDERS ONLINE, TOP TENDERS TODAY, TENDER ARCHIVE, POST TENDER REPORTS, BID DOCUMENTS