|Full name||Earl Henry Buchholz, Jr.|
|Country (sports)||United States|
|Born||September 16, 1940|
St. Louis, MO
|Height||6 ft 2 in (1.88 m)|
|Turned pro||1961 (amateur tour from 1954)|
|Plays||Right-handed (one-handed backhand)|
|Int. Tennis HoF||2005 (member page)|
|Highest ranking||No. 5 (1960, Lance Tingay)|
|Grand Slam Singles results|
|Australian Open||QF (1969)|
|French Open||2R (1969)|
|Wimbledon||QF (1960, 1968)|
|US Open||SF (1960)|
|US Pro||W (1962)|
|Wembley Pro||SF (1962, 1963, 1965)|
|French Pro||SF (1965, 1966)|
|Grand Slam Doubles results|
|US Open||QF (1969)|
|Davis Cup||F (1959)|
Earl Henry "Butch" Buchholz, Jr. (born September 16, 1940) is a former professional tennis player from the United States who was one of the game's top players in the late 1950s and early 1960s.
Buchholz was an outstanding junior, winning all three of the Boys' Singles slam titles in a row during 1958–1959:
French Open: W (1958)
Wimbledon: W (1958)
Australian Open: W (1959)
Buchholz also won the U.S. National Boys’ 18 title in Kalamazoo, Michigan in 1958. 
On February 10, 1959, he appeared as a mystery contestant on the television quiz show To Tell the Truth, where he was described as holding the “grand slam” of junior tennis titles in France, England, Australia and the United States. 
Buchholz was ranked by Lance Tingay the World No. 5 amateur player in 1960, and was ranked four times in the US Top 10. He played for the US in the Davis Cup from 1959 to 60. Buchholz reached the semi finals of the U. S. championships in 1960, losing to Rod Laver in five sets.
Buchholz turned professional in 1961. He won the United States Pro Championship in 1962, by beating Pancho Segura in the finals. Buchholz was an original member of Lamar Hunt's Handsome Eight, a group of players signed by in 1968 for the newly formed professional World Championship Tennis (WCT) group.
Since retiring as a player, Buchholz has served tennis in many professional and administrative capacities. He has been the Commissioner of World Team Tennis from 1977 to 1978, an Executive Director of the Association of Tennis Professionals from 1981 to 1982, and member of the men's pro council from 1981 to 1983.
In 1985, Buchholz founded the Lipton International Players Championships (now known as the Miami Masters), which is now a leading event on both the men's and women's tours.
Buchholz helped create Altenis, a management company which oversees tennis tournaments in Latin America. He also helped secure the continuation of the Orange Bowl International Tennis Tournament, a prominent international junior event in Florida. In 1992, Buchholz teamed-up with Arthur Ashe to found the 'Good Life Mentoring Program', benefiting hundreds of elementary and middle school children in the greater Miami area.
In 2005, Buchholz was inducted into the International Tennis Hall of Fame in Newport, Rhode Island.