Kállay, or Kallay, is a surname. Notable persons with that name include:
Kállay family, a Hungarian noble familyBéni Kállay (1839–1903), Austro-Hungarian statesmanTibor Kállay (1881–1964), Hungarian politicianMiklós Kállay (1887- 1967), Hungarian politicianGyula Kállai (1910–1996), Hungarian Communist politicianGabor Kallai (born 1959), Hungarian chess GrandmasterNorbert Kállai (born 1984), Hungarian football playerFoday Kallay, Sierra Leonian rebel group leader