Walter Henry "Wally" Kopf (July 10, 1899 – April 30, 1979) was a German American professional baseball player whose career spanned two seasons, which included one in Major League Baseball (MLB) with the New York Giants (1921). He played only two games, making his debut on October 1, 1921 and his final appearance the next day. In those games, he played third base, compiling one hit in three at bats. In 1922, he played in the minor leagues with the Oakland Oaks, Reading Aces, and the Newark Bears. Before pro-baseball, Kopf attended Dartmouth College (1919–21). He served in World War I. After his baseball career was over, he moved to Cincinnati where he worked as a building contractor. He was the younger brother of professional baseball player Larry Kopf.

Walter Henry "Wally" Kopf (July 10, 1899 – April 30, 1979) was a German American professional baseball player whose career spanned two seasons, which included one in Major League Baseball (MLB) with the New York Giants (1921). He played only two games, making his debut on October 1, 1921 and his final appearance the next day. In those games, he played third base, compiling one hit in three at bats. In 1922, he played in the minor leagues with the Oakland Oaks, Reading Aces, and the Newark Bears. Before pro-baseball, Kopf attended Dartmouth College (1919–21). He served in World War I. After his baseball career was over, he moved to Cincinnati where he worked as a building contractor. He was the younger brother of professional baseball player Larry Kopf.