The solubility of hydrogen in Athabasca bitumen was measured using a batch autoclave. The experiments were conducted at temperatures in the range 50-300 degrees C at partial pressures of hydrogen up to 24.8 MPa. The prediction and correlation of the solubility data by the Peng-Robinson equation, the Soave-Redlich-Kwong equation and the Grayson-Streed method were carried out. The best result was obtained with the use of either a modified Peng-Robinson or Soave-Redlich-Kwong equation of state.