The modern Gantt chart was already well established throughout industries as early as the 1990s, but its origins can be traced back much further to the late 19th century. In 1896, Polish engineer Karol Adamiecki created the “harmonogram,” the earliest known version of what would later come to be known as the Gantt chart. Concurrently, American mechanical engineer Henry Gantt was developing similar ideas on how to organise tasks within production industries.
In 1923, consulting engineer Henry Wallace Clark described the structure, usage, and benefits of Gantt’s work in his book The Gantt Chart; a Working Tool of Management, coining the term Gantt Chart and establishing it within the modern management lexicon. And while the first Gantt charts were hand drawn, making them poorly suited to the growing complexities of advancing manufacturing processes of the 1950s, the eventual introduction of computing software brought Gantt charts back into serviceability.
Today, Gantt charts are among the most commonly used planning and charting techniques in the world.