The Boxer at Rest, also known as the Terme Boxer, Seated Boxer, Defeated Boxer, or Boxer of the Quirinal, is a bronze sculpture, either a Hellenistic Greek original or a Roman copy, of a sitting nude boxer at rest, still wearing his himantes (Ancient Greek: ἱμάντες, romanized: himántes, plural of ἱμάς, himás, 'a leathern strap or thong'), a type of leather hand-wrap. It has been given various dates within the period of about 330 to 50 BC. It was excavated in Rome in 1885, and is now in the collection of the National Museum of Rome, normally displayed in the Palazzo Massimo alle Terme.

The Boxer at Rest is one of the finest examples of bronze sculptures to have survived from the ancient world; survivals from the period are rare, as they were easily melted down and transformed into new objects. The work comes from a period in Greek art where there is a movement away from idealized heroic depictions of the body and youth, and an exploration of emotional as well as psychological themes and greater realism. These traits are typical of Hellenistic art and thoroughly displayed in this sculpture, making it a hallmark of the Hellenistic style.