The solubilities of hydrogen in benzene, naphthalene, phenanthrene, and pyrene were measured using a static equilibrium cell over the temperature range from 323.2 to 433.2 K and pressures to 21.7 MPa. The uncertainty in these new solubility measurements is estimated to be less than 0.001 in mole fraction. The data were analyzed using the Soave-Redlich-Kwong (SRK) and Peng-Robinson (PR) equations of state (EOS). In general, the two equations represent the experimental data well when a single interaction parameter (C-ij) is used for each isotherm. The data suggest that the EOS C-ij interaction parameter is highly temperature dependent.