| Company | Year | City | Founded By: | Website |
| P.W.C | ||||
| Pabro | ||||
| Pagol | ||||
| Panerai, Officine | 1860 | Florence | Guido Panerai & Figlio | www.panerai.com |
| Parat | ||||
| Parker | ||||
| Parmigiani Fleurier | 1996 | Michel Parmigiani | www.parmigiani.com | |
| Patek Philippe & Co. | 1839 | Geneve | A.N. de Patek, J.A. Philippe | www.patek.com |
| Pathos | ||||
| Patria | ||||
| Pequignet, Emil | www.montres-peguignet.com | |||
| Perfine | ||||
| Perpetual Watch Co. | ||||
| Perrelet | 1770 | Le Locle | Abraham-Louis Perrelet | www.perrelet.com |
| Peugeot, Paul | ||||
| Phenix Watch Co. | 1873 | Porrentruy | Dubail, Monnin, Frossard & Co. | |
| Phillepe Watch Co. | ||||
| Phillips, Steven | www.budapestwatco.com | |||
| Piaget & Co. | 1874 | La Cote-aux-Fees | Gges. Piaget | www.piaget.com |
| Piccard, Lucien | ||||
| Picot, Paul | 1976 | Geneve | www.paulpicot.ch | |
| Pierce | 1883 | Biel | Levy Freres | |
| Piguet, Frederic | 1858 | Le Brassus | Louis Elysee Piguet | |
| Piguet, Les Fils de Victorin | 1880 | Le Sentier | Victorin Piguet | |
| Piquot Meridien | www.piquotmeridien.ch | |||
| Players | ||||
| Poljot International | www.poljot-international.com | |||
| Pomellato | ||||
| Porsche Design | www.porsche-design.com | |||
| Precimax | 1933 | Neuchatel | S. Tripet | |
| Preisig | Schaffhausen | www.preisig-uhren.ch | ||
| Preziosa | ||||
| Preziuso, Antoine | 1990 | www.antoine-preziuso.com | ||
| Prisma | ||||
| Pronto | ||||
| Provita | ||||
| Pulsar (by Seiko) | www.pulsarwatches.com |
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