| IPO | I Peek Out 
| Others |
| IPO | Ideological, Political, and Organizational
| Others |
| IPO | Immediate Profit Opportunities
| Others |
| IPO | Immediate Profit Opportunity
| Others |
| IPO | Indian Patent Office
| Others |
| IPO | Indian Postal Order
| Others |
| IPO | Indirect Production Overhead
| Others |
| IPO | Indonesian Palm Oil
| Others |
| IPO | Industrial Process Optimization
| Others |
| IPO | Infrastructure Production Operations
| Others |
| IPO | Initial Player Offering
| Others |
| IPO | Initial Public Offer
| Others |
| IPO | Initial Public Offering
| Stocks and Trading |
| IPO | Initial Public Offerings
| Others |
| IPO | Initial Public Office
| Others |
| IPO | Inlet Port Opens
| Others |
| IPO | Input Processing and Output
| Others |
| IPO | Input, Process, Output
| Others |
| IPO | Input, Processing, and Output
| Others |
| IPO | Insane People's Outing
| Others |
| IPO | Insane Peoples Outing
| Others |
| IPO | Insane Profit Opportunity
| Others |
| IPO | Inspecao Periodica Obrigatoria
| Others |
| IPO | Installation Productivity Option
| Others |
| IPO | Instant Porsche Owner
| Others |
| IPO | Instant Profit Opportunity
| Others |
| IPO | Institutional Parole Officer
| Others |
| IPO | Instituto Português de Oncologia
| Others |
| IPO | Integrated Program Office
| Others |
| IPO | Intellectual Property Office
| Others |
| IPO | Intellectual Property Office [U.K.]
| Others |
| IPO | Intellectual Property Organization
| Others |
| IPO | Intellectual Property Owners
| Others |
| IPO | Intellectual Property Owners Association
| Others |
| IPO | Inter Procedural Optimization
| Others |
| IPO | Intercept Point Optimization
| Others |
| IPO | Interdecadal Pacific Oscillation
| Others |
| IPO | Interest Paid On
| Others |
| IPO | International Pasta Organization
| Others |
| IPO | International Pop Overthrow
| Others |
| IPO | International Program Office
| Others |
| IPO | International Programs Office
| Others |
| IPO | International Progress Organization
| Others |
| IPO | International Project Office
| Others |
| IPO | International Purchase Office
| Others |
| IPO | International Purchasing Office
| Others |
| IPO | Internationale Pruefungs Ordnung
| Others |
| IPO | Internationale Prufungs Ordnung
| Others |
| IPO | Internet Parts Ordering
| Others |
| IPO | Internet Phase One
| Others |
| IPO | Internet Policy Observatory
| Others |
| IPO | Internet Protocol Over ....
| Others |
| IPO | Internet Provider of Origin
| Others |
| IPO | Interprocedural Optimization
| Others |
| IPO | Introductory Price Offer
| Others |
| IPO | Investigation Police Officer
| Others |
| IPO | Investing Pays Off
| Others |
| IPO | Investment Process Outsourcing
| Others |
| IPO | Israel Philharmonic Orchestra
| Others |
| IPO | It's Probably Overpriced
| Others |
| IPO | itial Propaganda Offering
| Others |
| IPO | itial Public Offer
| Others |
| IPO | itial Public Offering
| Others |
| IPO | went public
| Others |