Patek Philippe SA (French: [pəˈtɛk fəˈlip]) is a Swiss luxury watch and clock manufacturer, located in the Canton of Geneva and the Vallée de Joux. Established in 1839, it is named after two of its founders, Antoni Patek and Adrien Philippe. Since 1932, the company has been owned by the Stern family in Switzerland and remains the last family-owned independent watch manufacturer in Geneva. Patek Philippe is one of the oldest watch manufacturers in the world with an uninterrupted watchmaking history since its founding. It designs and manufactures timepieces as well as movements, including some of the most complicated mechanical watches. The company maintains over 400 retail locations globally and over a dozen distribution centers across Asia, Europe, North America, and Oceania. In 2001, it opened the Patek Philippe Museum in Geneva.

Patek Philippe is widely considered to be one of the most prestigious watch manufacturers in the world. As of July 2023, among the world’s top ten most expensive watches ever sold at auctions, nine are Patek Philippe watches. In particular, Patek Philippe Grandmaster Chime Ref. 6300A-010 currently holds the title of the most expensive watch (and wristwatch) ever sold at auction (US$31.19 million/31 million CHF), while Patek Philippe Henry Graves Supercomplication, the world’s most complicated mechanical watch until 1989, currently holds the title of the most expensive pocket watch ever sold at auction (US$24 million/23,237,000 CHF).