Jakub Sobieski (May 5, 1590 – June 23, 1646) was a Polish noble, parliamentarian, diarist, political activist, military leader and father of King John III Sobieski. He was the son of castellan and voivode Marek Sobieski and Jadwiga Snopkowska.
Sobieski was educated in Kraków and Paris. He was a famed orator and parliamentarian. He participated in the military expedition (Dymitriads) against Russia in 1617-1618 (wounded during the assault of Moscow), and was a member of the War Council (Rada wojenna) of King Władysław IV. He took part in negotiations with Muscovy in the Truce of Deulino in 1618. Subsequently he fought in the Chocim expedition against the Ottoman Empire in 1621, and the expedition against Abazy Pasa in 1633. He was one of the negotiations with Sweden in the Treaty of Stuhmsdorf (Sztumska Wieś) in 1635.
After his marriage to Zofia Teofillia Daniłowicz his wealth increased significantly, as Zofia brought in her inheritance after the Żółkiewski family and part of the Daniłowski family estates, including Żółkiew Castle.