Harvey King Blauvelt (December 1867 – May 25, 1929) was a 19th-century Major League Baseball pitcher. He played in two games for the 1890 Rochester Broncos of the American Association. Blauvelt's two appearances came in June 1890, and both were as a relief pitcher. The first was against the Brooklyn Gladiators, and the second was against the St. Louis Browns.