Jan Karol Chodkiewicz (c. 1560 – 24 September 1621) (Belarusian: Ян Караль Хадкевіч, Jan Karal Chadkievič, Lithuanian: Jonas Karolis Chodkevičius) was a military commander of the Polish-Lithuanian army who was from 1601 Field Hetman of Lithuania, and from 1605 Grand Hetman of Lithuania, and was one of the most prominent noblemen and military commanders of the Polish–Lithuanian Commonwealth of his era.