Fock is a surname. Notable people with the surname include:
Vladimir Fock (1898–1974), a Soviet physicist, who did foundational work on quantum mechanics and quantum electrodynamics
Fock space, an algebraic system used in quantum mechanics for a variable or unknown number of particles
Fock state, any element of a Fock space with a well-defined number of particles
Fock matrix, a matrix approximating the single-electron energy operator
Jenő Fock (1916–2001), a Hungarian Chairman of the Council of Ministers from 1967 to 1975
Wim Fock (1909–1984), a Dutch boxer who competed in the 1936 Summer Olympics
Gorch Fock (author), pseudonym of Johann Wilhelm Kinau (1880-1916), German author
Gorch Fock (1933), the first sailing ship named after him
Gorch Fock (1958), that ship's successor
Bror Fock (1888–1964), a Swedish runner who specialized in the 3000 metres
Dirk Fock (1858–1941), a Dutch politician
Carin Fock (1888–1931), the first wife of Hermann Göring
Metta Fock (1765–1810), Swedish convicted murderer