Ruffles (known as Lays Maxx or Lays Max in some countries and Walkers Max, Walkers Max Double Crunch or Walkers Max Strong for the UK and Ireland markets, and Lays Ondas for Peru) is an American brand of crinkle-cut potato chips. The Frito Company acquired the rights to Ruffles brand potato chips in 1958 from its creator, Bernhardt Stahmer, who had adopted the trademark in 1948.^[1] Frito merged with H.W. Lay & Co. in 1961 to form Frito-Lay.^[2] In India, when this product was introduced in 1995, it was branded “Ruffles Lays”, though it would be renamed to Ruffles in the late 90s.^{[citation needed]}

Ruffles are produced in a variety of flavors and presentations in addition to traditional potato chip flavors, although some of these variants are produced exclusively for regional markets. Existing varieties include: sour cream & onion, cheddar & sour cream, cheese, barbecue, salt & vinegar, cream cheese, and hot wings.

In Canada, a unique Ruffles flavor known as All-Dressed, a mix of ketchup, barbecue, and salt & vinegar flavors, is the most popular in the country.^{[citation needed]}

In Mexico, it has already been sold in the flavors of jamón, buffalo salsa, and chile con queso. In Brazil, it has an exclusive flavor: onion and parsley, but it also has other limited flavors like yakisoba, stroganoff, honey mustard,^[3] pepperoni, feijoada, burritos,^[4] ribs, pizza and lime.^[5]

• McCoy's (similar UK product)
• Seabrook (similar UK product)
• Chitato (similar product)
• List of brand name snack foods