  Inclusive transverse momentum spectra of eta mesons have been measured within
p_T = 2-10 GeV/c at mid-rapidity by the PHENIX experiment in Au+Au collisions
at sqrt(s_NN) = 200 GeV. In central Au+Au the eta yields are significantly
suppressed compared to peripheral Au+Au, d+Au and p+p yields scaled by the
corresponding number of nucleon-nucleon collisions. The magnitude, centrality
and p_T dependence of the suppression is common, within errors, for eta and
pi^0. The ratio of eta to pi^0 spectra at high p_T amounts to 0.40 < R_eta/pi^0
< 0.48 for the three systems in agreement with the world average measured in
hadronic and nuclear reactions and, at large scaled momentum, in e^+e^-
collisions.
