Replica sneakers are imitation versions of branded or high-end sneakers, designed to look almost identical to the originals. They are often produced by manufacturers who aim to replicate the look, materials, logos, and overall design of popular sneaker brands like Nike, Adidas, Yeezy, and more luxury brands like Gucci or Balenciaga. These replicas are usually sold at a fraction of the original retail price, appealing to buyers who want the look of a premium sneaker without the high price tag.

They closely mimic the original sneaker in terms of design, colourway, logos, and even stitching. Some replicas are made with high-quality materials that nearly match the originals, while others are produced with cheaper, lower-quality materials. Typically, replicas cost significantly less than authentic sneakers. Prices can vary, with some high-quality replicas being more expensive than others. Replica sneakers online vary widely in quality, from poor knock-offs to high-quality replicas known as "1:1 replicas," which can be difficult to distinguish from the real thing.

Replica sneakers are often illegal due to trademark infringement, as they frequently copy the logos, names, and design trademarks of popular brands. Purchasing or selling replicas can be risky and may have legal consequences in some regions. From an ethical standpoint, replicas are controversial, as they infringe on the intellectual property rights of designers and companies, though some people argue they democratize fashion by making high-end designs accessible. High-quality replicas offer a designer look at a lower cost. Some people buy replicas purely for their appearance without caring about authenticity. Certain sneakers are extremely limited in supply, leading people to seek replicas if they cannot obtain the authentic version.