徽章是以一定图案编排以表示佩戴者或装置物的身份、职业等的标志。徽章一般带有图案，甚至会带有解释性文本或表达意义的词句。

徽章一般由图案和文本组成，也有单纯的文本或图案徽章。图案一般为对称性图案，用图画表达徽章本身所要表达的意思。文本则起说明作用，直接表达徽章的用意。

A badge is a device or accessory, often containing the insignia of an organization, which is presented or displayed to indicate some feat of service, a special accomplishment, a symbol of authority granted by taking an oath (e.g., police and fire), a sign of legitimate employment or student status, or as a simple means of identification. They are also used in advertising, publicity, and for branding purposes. Police badges date back to medieval times when knights wore a coat of arms representing their allegiances and loyalty.