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Amateurism (from Fr. amateur "lover of," from O.Fr., from L. amatorem nom. amator, "lover,"). As a value system, amateurism elevates things done with self-interest above those done for pay (i.e., professionalism). The term has particular currency in its usage with regard to sports. By definition amateur sports require participants to participate without remuneration. Amateurism was a zealously guarded ideal in the 19th century, especially among the upper classes, but faced steady erosion throughout the 20th century, and is now strictly held as an ideal by fewer and fewer organizations governing sports, even as they maintain the word "amateur" in their titles.

By the early 21st century the Olympic Games and all the major team sports accepted professional competitors. However, there are still some sports which maintain a distinction between amateur and professional status with separate competitive leagues. The most prominent of these are golf and boxing.

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