Retro, short for retrospective, is a modern term used to describe things from a bygone era. It is often used in a positive sense, referring to quirky or attractive products that are no longer available. For example, "Retro fashion" or "Retro Chic" may consist of outdated styles, such as tie-dyed shirts from the 1960s, or poodle skirts from the 1950s. A love of retro objects (things from the past) is called retrophilia.

Retro, both in popular and in legitimized culture, can be seen as an uncritical exaltation of the past, used as a weapon against contemporary cultural forms. Retro is uncritical because it sees itself as a return to a lost authenticity, to basic values which somehow have been corrupted by later evolutions.