世界钟（world clock），是一种能显示全世界各大城市时间的时钟，它有以下几种特点 ：

• 钟面包含有能用手移动包含多个环绕式指针的时钟，或是多重数值的数字时钟，两种时钟都会 标记出大城市的名字，或全世界的时区。
• 它也可能是把指针或数字时间的显示，嵌入在世界地图中。

For World Clock,Hussein mohammeds

which is actually an astronomical clock, see Jens Olsen's World Clock

A world clock is a clock which displays the time for various cities around the world. The display can take various forms:

There are also worldtime watches, both wrist watches and pocket watches. Sometime manufacturers of timekeepers erroneously apply the worldtime label to instruments that merely indicate time for two or a few time zones, but the term should be used only for timepieces that indicate time for all major time zones of the globe.