John C. Willke, American physician, author, and activist (b. 1925)
John Charles Willke (April 5, 1925 – February 20, 2015) was an American author, physician, and anti-abortion activist. He served as president of National Right to Life and, along with his wife Barbara, authored a number of books on abortion and human sexuality. Willke was a leading proponent of the false claim that women's bodies can resist pregnancy resulting from sexual assault, an idea which continues to be promoted by some anti-abortion politicians.