Rudy Creek is a stream in Ziebach County [1] in the U.S. state of South Dakota. It is a left-bank tributary close to the mouth of the Cheyenne River, [1] draining into Lake Oahe.
A variant name was Rudey Creek. [1] The stream has the name of an early cattleman. [2]
44°43′50″N101°08′58″W / 44.73056°N 101.14944°W