Maurice Wesley Parker Sr. (1873–1958) was an American voice coach, record-setting marksman, champion billiard player, landscape painter and violin maker.

The medical courses that interested him most were those on the throat and vocal organs, which he studied under a prominent authority, Dr. Joseph Goodale.

While at Harvard, Parker contracted a severe case of typhoid fever, which resulted in his discontinuing medical school and giving up medicine as a profession.

In 1906, in a skirmish match involving running up toward a target and firing 20 shots at various distances, he made a perfect score, a record for all ranges in the United States.

[12][13][14][15][16][17][18][19] His biographer, Wilmon Brewer, observed that Parker “seldom undertook anything in which he did not eventually excel.” In addition to marksmanship, his achievements in billiards is another example of this.

Two of his paintings were featured in Wilmon Brewer's book, Adventures in Verse, and two of his photographs were published in American Photography magazine.