Jireček is a Czech surname that may refer to the following notable people:
Hermenegild Jireček (1827–1909), Bohemian jurisconsult Josef Jireček (1825–1888), Czech scholar Konstantin Josef Jireček (1854–1918), Josef's son and a fellow scholar
See also Jireček Line, a conceptual line between ancient Greek and Latin spheres of influence in the Balkans Jireček Point, a point on the northwest coast of Smith Island in the South Shetland Islands Irechek, a village in Kavarna Municipality, Dobrich Province, Bulgaria Jiráček