| Power Site, S.A. | Buenos Aires |
| Power Solution | |
| PowerShift | Buenos Aires |
| Practia | Buenos Aires |
| Premium Consulting | Buenos Aires |
| Premium Soft | Buenos Aires |
| Primafase | Buenos Aires |
| Printing solution s.a. | Buenos Aires |
| Privatel S.R.L. | Buenos Aires |
| Procesos-e | Buenos Aires |
| Proda Software | |
| Prodigy Software | Buenos Aires |
| Producteca | |
| Professional Soft | Buenos Aires |
| Proges | Buenos Aires |
| Programas de Gestión | Buenos Aires |
| ProKarma | Buenos Aires |
| Promositios | Buenos Aires |
| Pronexo | Santa Fe |
| Properati | |
| ProRM | Buenos Aires |
| Provetel S.R.L. | Buenos Aires |
| Proyecto 404 | Buenos Aires |
| Proyecto2001 | Buenos Aires |
| ProyectoBeta | Santa Fe |
| PSIWARE | |
| Puente Digital | Córdoba |
| Puna Bio | |
| Puzzle MKT | Buenos Aires |
| Pymesoft | Buenos Aires |
| Pyxel | Buenos Aires |
| Q-Implant | Buenos Aires |
| QKStudio | Buenos Aires |
| Qm Digital Agency | Buenos Aires |
| Qu4tro | Buenos Aires |
| Quadion Technologies | |
| Quality Argentina | Buenos Aires |
| Quarter Studios | Buenos Aires |
| Quarux Capital | Buenos Aires |
| Quick Informatica | Buenos Aires |
| Quilmac | Buenos Aires |
| Quilsoft | |
| Quipusoft | Buenos Aires |
| Quoma Software Development | Mendoza |
| RAD MKT | |
| RAN Security | Buenos Aires |
| Ranquel Technologies | Buenos Aires |
| RAYCE - Aldagus S.R.L. | Buenos Aires |
| RCH | Buenos Aires |
| ReachOut | |