Morris G. Hallock (February 17, 1926 – August 11, 2018) was an American politician. He was born in Springview, Nebraska. He was a member of the South Dakota House of Representatives in the 1950s and 1960s. He was a Republican.
In the 1950s, Hallock also was Secretary of Finance in the South Dakota Government.
Hallock died in Sioux Falls, South Dakota on August 11, 2018 from Parkinson's disease, aged 92.