We report the value of the electric quadrupole moment of Bi209 extracted from the atomic data. For this, we performed electronic structure calculations for the ground S3/2o4 and excited P3/2o2 states of atomic Bi using the Dirac-Coulomb-Breit Hamiltonian and the Fock space coupled-cluster method with single, double, and full triple amplitudes for the three-particle Fock space sector. The value of the quadrupole moment of Bi209, Q(209Bi)=-418(6) mb, derived from the resulting electric field gradient values and available atomic hyperfine splittings is in excellent agreement with molecular data. Due to the availability of the hyperfine constants for unstable isotopes of Bi, current atomic calculation allows also to correct their quadrupole moments.