Capus Miller Waynick (December 23, 1889 – September 7, 1986) was an American newspaperman, politician, and diplomat.
Born in Rockingham County, North Carolina, Waynick enrolled at the University of North Carolina at Chapel Hill but did not graduate. He became a reporter for the Greensboro Record and eventually rose to become its publisher, and later editor of the High Point Enterprise. Waynick, a Democrat, was elected to one term in the North Carolina House of Representatives and to one term in the North Carolina Senate. He held a variety of offices in the North Carolina state government, managed the successful gubernatorial campaign of Kerr Scott, and was the chairman of the North Carolina Democratic Party in 1948–1949. President Harry Truman appointed him to serve as U.S. Ambassador to Nicaragua (1949–1951) and then to Colombia (1951–1953). Waynick served as adjutant general of the North Carolina National Guard under Gov. Luther Hodges from 1957 to 1961.