Eoprephasma is an extinct genus of stick insect in the susumaniid subfamily Susumaniinae known from a group of Eocene fossils found in North America.

The partial Susumanioidea specimens were found in the Tranquille Formation belonging to the Kamloops group that outcrops at the McAbee Fossil Beds near Cache Creek, BC.

The counterpart specimen F-1099 is also in the Thompson Rivers University collections, while the part side, PB-3825 is at the Burke Museum of Natural History and Culture.

The specific epithet hichensi is in honor of Keir Hichens, who first found the specimen in 2012 and donated it to the Stonerose Interpretive Center.

[1] Phylogenetic analysis of Susumanioidea published by Yang et al (2021) resulted in placement of Eoprephasma as the sister group to Renphasma deep within the Susumaniidae subfamily Susumaniinae.