The Hewlett-Packard Company ( ), commonly referred to as HP, is an American information technology corporation, specializing in personal computers, notebook computers, servers, network management software, printers, digital cameras, and calculators, among other technology related products.

Headquartered in Palo Alto, California, United States, it has a global presence in the fields of computing, printing, and digital imaging, and also provides software and services. The company, which once catered primarily to engineering and medical markets—a line of business it spun off as Agilent Technologies in 1999—now markets to households and small business products such as printers, cameras and ink cartridges found in grocery and department stores.

HP posted US $91.7 billion in annual revenue in 2006 compared to US$91.4 billion for IBM, making it the world's largest technology vendor in terms of sales. In 2007 the revenue was $104 billion , making HP the first IT company in history to report revenues exceeding $100 billion .

HP is the largest worldwide seller of personal computers, surpassing rival Dell, according to market research firms Gartner and IDC reported in October 2006; the gap between HP and Dell widened substantially at the end of 2006, with HP taking a near 3.5% market share lead.