  We study the contribution of Scalar Leptoquark (SLQ) loops to the two photon
scattering cross section at high energies. The leading order helicity
amplitudes are discussed at coupling O(e4) for Standard Model (SM) fermions,
weak bosons and SLQs. Helicity amplitudes for the different types of loops are
calculated for photon center of mass energies being much higher than weak boson
mass scale but still much lower than the predicted Leptoquark mass scales.
Finally, the cross section due to the SLQ loops is presented in conjunction
with the known SM contribution.
