Artificial nails, also known as fake nails, false nails, fashion nails, nail enhancements, or nail extensions, are coverings placed over fingernails as fashion accessories. Some artificial nails attempt to mimic the appearance of real fingernails as closely as possible, while other designs may deliberately stray in appearance from real fingernails. Artificial nails are made from a wide variety of materials.

The artificial nails are not a replacement, but an extension for natural nails. There are two main approaches to creating artificial nails—tips and forms. Tips are made of lightweight plastic plates that are "nail"-shaped. They are glued on the end of the natural nail and acrylic is then applied over the entire nail. Tips are now available in many different colors and designs, ranging from simple colors such as yellow or blue to flamboyant designs such as animal prints and mixed metallic colors. Forms are fitted over the nail and then an artificial nail is molded out of acrylic and the form is removed and then properly shaped and buffed to a shine.