We report the first measurement of the Q 2 distribution of X(3915) produced by single-tag twophoton interactions. The decay mode used is X(3915) → J/ψω. The covered Q 2 region is from 1.5 (GeV/c) 2 to 10.0 (GeV/c) 2 . The observed number of events is 7.9 ± 3.1(stat.) ± 1.5(syst.), in comparison to the expectation of 4.1 ± 0.7 derived from the standard value at Q 2 = 0 measured in the no-tag two-photon process and extrapolated to the higher Q 2 region using a cc model. The measured Q 2 distribution does not show a significant shift to lower Q 2 in contrast to the expectation from some types of non-cc models. It agrees with X(3915) being a charmonium state, though it does not exclude a non-cc state with compact size or large compact components.