Carhess Creek is a river in Greater Sudbury and Sudbury District in Northeastern Ontario, Canada.

[1] It is in the Great Lakes Basin and is a right tributary of the Onaping River.

The name is a portmanteau of the names of two geographic townships through which it flows, Hess Township and Cartier Township.

The creek begins at Ferguson Lake in geographic Hess Township,[2] Sudbury District, and flows south through Green Lake into geographic Cartier Township.

[3] It turns east, takes in the left tributary Depot Creek, passes into the northwest corner of geographic Levack Township,[4] Greater Sudbury, flows over a series of rapids, heads around both sides of a small hill, and reaches its mouth at the Onaping River, upstream of the community of Levack.