Potato chips (known as crisps in British English and Hiberno-English; as chips in American, Australian, New Zealand, Canadian, Singapore, South African, Jamaican English and as either chips or wafers in Indian English) are thin slices of potato that are deep fried or baked. Potato chips are commonly served as an appetizer, side dish, or snack. The basic chips are cooked and salted; additional varieties are manufactured using various flavorings and ingredients including seasonings, herbs, spices, cheeses, and artificial additives.

Crisps, however, refer to many different types of snack products in the UK and Ireland, some made from potato, but may also be made from maize and tapioca. An example of these kinds of crisps is Monster Munch.

Potato chips are a predominant part of the snack food market in English-speaking countries and numerous other Western nations. The global potato chip market generated total revenues of US$16.4 billion in 2005. This accounted for 35.5% of the total savory snacks market in that year (US$46.1 billion).