PepsiCo Inc. is an American multinational food and beverage corporation headquartered in Purchase, New York, United States, with interests in the manufacturing, marketing and distribution of grain-based snack foods, beverages, and other products. PepsiCo was formed in 1965 with the merger of the Pepsi-Cola Company and Frito-Lay, Inc. PepsiCo has since expanded from its namesake product Pepsi to a broader range of food and beverage brands, the largest of which include an acquisition of Tropicana in 1998 and a merger with Quaker Oats in 2001—which added the Gatorade brand to its portfolio.

As of January 2012, 22 of PepsiCo's product lines generated retail sales of more than $1 billion each, and the company's products were distributed across more than 200 countries, resulting in annual net revenues of $43.3 billion. Based on net revenue, PepsiCo is the second largest food & beverage business in the world. Within North America, PepsiCo is ranked (by net revenue) as the largest food and beverage business.

Indra Krishnamurthy Nooyi has been the chief executive of PepsiCo since 2006, and the company employed approximately 297,000 people worldwide as of 2011. The company's beverage distribution and bottling is conducted by PepsiCo as well as by licensed bottlers in certain regions. PepsiCo is a SIC 2080 (beverage) company.

The recipe for Pepsi (the soft drink), was first developed in the 1880s by a pharmacist and industrialist from New Bern, North Carolina, named Caleb Bradham – who called it "Pepsi-Cola" in 1898. As the cola developed in popularity, he created the Pepsi-Cola Company in 1902 and registered a patent for his recipe in 1903. The Pepsi-Cola Company was first incorporated in the state of Delaware in 1919. The company went bankrupt in 1931 and on June 8 of that year the trademark and syrup recipe was bought by Charles Guth who owned a syrup manufacturing business in Baltimore, Maryland. Guth was also the president of Loft, Incorporated, a leading candy manufacturer and used the company's labs and chemists to reformulate the syrup. He further contracted to stock the soda in Loft's large chain of candy shops and restaurants, which were known for their soda fountains, used Loft resources to promote Pepsi, and moved the soda company to a location close by Loft's own facilities in New York City. In 1935 the shareholders of Loft sued Guth for his 91% stake of PepsiCo in the landmark Guth v. Loft Inc.. Loft won the suit and on May 29, 1941 formally absorbed Pepsi into Loft, which was then rebranded as Pepsi Cola Company that same year. (Loft restaurants and candy stores were spun off at this time.) In the early 1960s the company product line expanded with the creation of Diet Pepsi and purchase of Mountain Dew.