最尊贵的巴斯勋章（The Most Honourable Order of the Bath，旧称最尊贵的巴斯军事勋章），由乔治一世在1725年5月18日设立。巴斯一名来自于中世纪时代，册封骑士的其中一种仪式 - 沐浴，象征着净化。以这种方式册封的骑士称为“沐浴骑士”，音译为“巴斯骑士”。乔治一世为这些骑士设立了巴斯骑士团，但他本人并非巴斯骑士，因为巴斯骑士此前并非骑士团，管理依据一系列的规定进行，在巴斯骑士出现空缺时会选择人选替补。

巴斯勋章分为三等：

巴斯勋章分为民事或军事两类。在1815年之前，巴斯勋章只有一种等级，巴斯勋爵士（Knight Companion，KB），现在已经废除。获勋者通常是高级军官或高级公务员。并非英女皇子民的获勋者是骑士团的荣誉成员。

The Most Honourable Order of the Bath (formerly the Most Honourable Military Order of the Bath) is a British order of chivalry founded by George I on 18 May 1725. The name derives from the elaborate medieval ceremony for appointing a knight, which involved bathing (as a symbol of purification) as one of its elements. The knights so created were known as "Knights of the Bath". George I "erected the Knights of the Bath into a regular Military Order". He did not (as is commonly believed) revive the Order of the Bath, since it had never previously existed as an Order, in the sense of a body of knights who were governed by a set of statutes and whose numbers were replenished when vacancies occurred.