McCoy's is a brand of crinkle-cut crisps made in the United Kingdom by KP Snacks. It was first produced in 1985 and is marketed under the slogan "The Real McCoy's – Accept No Imitations", exploiting the Scottish idiom "the real McCoy". McCoy's is the third biggest brand in the bagged crisps market, with 5 million packets consumed each week and nearly a third of all UK households consuming the product. It was once promoted by United Biscuits "as the only overtly male-targeted crisp brand".

KP Snacks Limited is a British producer of branded and own-label maize-, potato-, and nut-based snacks, "Choc Dips" and nuts. The KP stands for “Kenyon Produce”. The company is based in Slough, England, UK.