Oscar E. Morehouse (August 5, 1857 – January 1, 1935) was a Canadian medical doctor and Conservative political figure. He represented York County in the New Brunswick provincial legislature from 1911 to 1917. A graduate of McGill Medical School, he practiced family medicine in the Kedgwick Ridge area of New Brunswick. Morehouse was first elected in a 1911 by-election held following the death of Thomas Robison. He was re-elected in the 1912 general and retired from politics to return to his medical practice at the dissolution of the 33rd Legislature in 1917.