Newton Schurz Halliday (June 18, 1896 – April 6, 1918) was an American baseball player.

He appeared in a portion of one game in Major League Baseball as a first baseman for the Pittsburgh Pirates on August 19, 1916.

Halliday had three putouts and an assist in the game and struck out in his only at bat.

He attended the Great Lakes Naval Training Station, where he contracted tuberculosis, which led to his death at the age of 21.

[3][4] Halliday was one of eight Major League Baseball players known either to have been killed or died from illness while serving in the armed forces during World War I.