Greg Ganske (born March 31, 1949) is a politician from Iowa.
Ganske was born in New Hampton, Iowa, and he graduated from the University of Iowa. Ganske worked as a plastic surgeon until he launched a campaign against veteran Democratic Congressman Neal Smith in 1994. Ganske campaigned in a beige 1958 DeSoto (Smith having won his first congressional race in that year). Ganske served in the House of Representatives from 1995 to 2003. In 2002, he was unsuccessful in his campaign for the United States Senate.