New experimental solubility data of nitrogen, oxygen, and carbon dioxide in JP-10 (exotetrahydrodicyclopentadiene) in the temperature range from 293 to 343 K in the intervals of 10 K and in the pressure range from 0.5 to 7.5 MPa were reported. The relative expanded uncertainty of solubility measurement is estimated to be less than 4% with a level of confidence of 95%. The solubility order of the three gases in JP-10 in the studied temperature and pressure range is carbon dioxide > oxygen > nitrogen. The Henry's constants and the thermodynamic properties of solvation were calculated from the solubility data. A modified KK equation was used to represent the experimental data with AARD less than 1.9%.