甘特图（英语：Gantt chart）是条状图的一种流行类型，显示专案、进度以及其他与时间相关的系统进展的内在关系随着时间进展的情况，是由亨利·甘特于1910年开发出。在专案管理中，甘特图显示专案的终端元素的开始和结束，概要元素或终端元素的依赖关系。

过往甘特图的制作甚少有软件支持，在绘图软件当中，亦只有Harvard Graphics可以让用户绘制甘特图。一般用户都只能在Lotus 1-2-3或Microsoft Excel上手动绘制。自从专案管理软件面世后，很多软件中都可以绘制，如Microsoft Project和Mr. Project等。

A Gantt chart is a type of bar chart, adapted by Karol Adamiecki in 1896 and independently by Henry Gantt in the 1910s, that illustrates a project schedule. Gantt charts illustrate the start and finish dates of the terminal elements and summary elements of a project. Terminal elements and summary elements comprise the work breakdown structure of the project. Modern Gantt charts also show the dependency (i.e., precedence network) relationships between activities. Gantt charts can be used to show current schedule status using percent-complete shadings and a vertical "TODAY" line as shown here.