Charles Robert McKinley Jr. (January 5, 1941 – August 11, 1986) was an American former world no. 1 men's amateur tennis champion of the 1960s. He is remembered as an undersized, hard-working dynamo, whose relentless effort and competitive spirit led American tennis to the top of the sport during a period heavily dominated by Australians.
McKinley won the 1963 Men's Singles Championship at Wimbledon. At the end of 1963, McKinley was ranked world No. 1 amateur by Ned Potter and an Ulrich Kaiser panel of 13 experts. He paired with Dennis Ralston to win the 1963 Davis Cup, the only interruption in eight unbroken years of Australian dominance. He also paired with Ralston to win the U.S. Men's Doubles championships in 1961, 1963, and 1964.