Un diagrama de Gantt és un tipus de diagrama de barres que vol mostrar el temps de les tasques tal i com passen pel temps. Malgrat que el diagrama de Gantt no mostrava inicialment les relacions entre les tasques, ha esdevingut més comú en l' ús actual, de manera que es poden identificar tant el temps com les interdependències.
A Gantt chart is a popular type of bar chart, that aims to show the timing of tasks or activities as they occur over time. Although the Gantt chart did not initially indicate the relationships between tasks this has become more common in current usage as both timing and interdependencies between tasks can be identified.