星表是天文学上的目录。在天文学中，许多恒星都只有在星表中有简单的编号，而为了许多不同的目的，有许多巨大的星表在费时多年后才编辑完成，但其中仅有少数的会经常被引用到。许多近年编辑完成的星表是使用电子格式编辑完成，可以直接由美国国家航空航天局的天文数据中心或其他的网站上免费下载。（参见文末的链接。）

随着人们发明强大的新型望远镜，看到的星星也越来越多，可见星星的数量数以亿计，因此现阶段根本不可能把数百亿颗恒星收录在单一星表中，而使用不同性质的星表来分类，常用的星表有：HD/HDE，SAO，BD/CD/CPD，AC，USNO-B1.0，ADS，BS，BSC，HR，GJ，Gliese，Gl，GCTP，HIP。

A star catalogue, or star catalog, is an astronomical catalogue that lists stars. In astronomy, many stars are referred to simply by catalogue numbers. There are a great many different star catalogues which have been produced for different purposes over the years, and this article covers only some of the more frequently quoted ones. Star catalogues were compiled by many different ancient peoples, including the Babylonians, Greeks, Chinese, Persians, and Arabs. Most modern catalogues are available in electronic format and can be freely downloaded from NASA's Astronomical Data Center.