The solubility of CO 2 and N 2 O in olive oil has been measured at temperatures of about 298, 310, and 323K with a gravimetric microbalance under pressures up to 2MPa. The molecular weight of olive oil has been analyzed and found to be about 882gmol −1 as a mixed oil compound. The observed solubility data have been correlated with a cubic equation of state (EOS) model. N 2 O has a larger solubility than CO 2 in olive oil based on either the mole or mass fraction. The present results clarify some ambiguities from the previous N 2 O solubility data in the literature.