| OpenPass | |
| Optima Ingeniera S.A. | Buenos Aires |
| Organización y Gestión | Buenos Aires |
| Organización y Sistemas | Buenos Aires |
| Osmosis | Buenos Aires |
| Overall | Buenos Aires |
| Overprint | Buenos Aires |
| P3Design | Buenos Aires |
| Page Personnel | Buenos Aires |
| pageIMPACT | Buenos Aires |
| Paginar | Buenos Aires |
| Paginas Vendodoras | Buenos Aires |
| Palermo Valley | Buenos Aires |
| Panasonic Service Oficial | Buenos Aires |
| Panda Antivirus Argentina | Buenos Aires |
| Pandora Design | Buenos Aires |
| Papyros Digitales | Buenos Aires |
| Paradigma | Buenos Aires |
| Patagonia Ventures Ltd | Buenos Aires |
| PathLink | Buenos Aires |
| PC Arts Argentina | Buenos Aires |
| PC Corp S.A. | Buenos Aires |
| PC Hard | Buenos Aires |
| PC One S.R.L. | Buenos Aires |
| PC Technical | Buenos Aires |
| PC Urgencias | Buenos Aires |
| PC3 | Buenos Aires |
| PcDiscount | Buenos Aires |
| Pectra BPM Savia | Buenos Aires |
| Pensamiento | Buenos Aires |
| Penta Tecnología Latinoamérica S.A.S. | Buenos Aires |
| Pentamedia | Córdoba |
| Pergamino PC | Buenos Aires |
| Perino & Boente Consultores | Buenos Aires |
| Perl Mongers de Capital Federal | Buenos Aires |
| Perseo | Córdoba |
| Personal Argentina | Buenos Aires |
| Perspectiva IT S.A. | Buenos Aires |
| Peter Nowell Design | Buenos Aires |
| Phonemark S.R.L. | Buenos Aires |
| PHWEB | Buenos Aires |
| Physis Informática, S.R.L. | Buenos Aires |
| Pi Consulting | Córdoba |
| Picaso Software | Buenos Aires |
| Pilgrim | |
| Planex Technologies | Buenos Aires |
| Plasmacom | Buenos Aires |
| Plum | Córdoba |
| Plus Tel S.R.L. | Buenos Aires |
| Pointer Localización y Asistencia S.A. | Buenos Aires |