Edwin John "Cy" Pieh (September 29, 1886 – September 12, 1945) was a Major League Baseball pitcher who played from 1913 to 1915 with the New York Yankees. He was a right-handed batter and pitcher. His nickname "Cy" was short for "Cyclone" because his corkscrew-style of pitching motion was said to resemble that of a cyclone.
He was born in Waunakee, Wisconsin, and his family moved to Enderlin, North Dakota when he was a child. He died in Jacksonville, Florida and was buried in Enderlin.