  We study intermittency of circulation moments in turbulent superfluid helium
by using experimental grid turbulence and numerical simulations of the
Hall-Vinen-Bekarevich-Khalatnikov model. More precisely, we compute the
velocity circulation $\Gamma_r$ in loops of size $r$ laying in the inertial
range. For both, experimental and numerical data, the circulation variance
shows a clear Kolmogorov scaling $\langle \Gamma_r^2 \rangle \sim r^{8/3}$ in
the inertial range, independently of the temperature. Scaling exponents of
high-order moments are comparable, within error bars, to previously reported
anomalous circulation exponents in classical turbulence and low-temperature
quantum turbulence numerical simulations.
