The following are the baseball events of the year 1966 throughout the world.  

¹American League Triple Crown Batting winner
²Major League Triple Crown Pitching winner

Giuseppe Paulo "Joe" DiMaggio (/dɨˈmɑːʒioʊ/ or /dɨˈmædʒioʊ/; November 25, 1914 – March 8, 1999), nicknamed "Joltin' Joe" and "The Yankee Clipper", was an American Major League Baseball center fielder who played his entire 13-year career for the New York Yankees. He is perhaps best known for his 56-game hitting streak (May 15 – July 16, 1941), a record that still stands. DiMaggio was inducted into the Baseball Hall of Fame in 1955.

A three-time MVP winner and 13-time All-Star, DiMaggio is the only player to be selected for the All-Star Game in every season he played. During his thirteen years with the Yankees, the club won ten American League pennants and nine World Series championships.

At the time of his retirement, he ranked fifth in career home runs (361) and sixth in career slugging percentage (.579). He was voted the sport's greatest living player in a poll taken in the baseball centennial year of 1969.

His brothers Vince and Dom also became major league center fielders.

DiMaggio was born in Martinez, California, the eighth of nine children born to immigrants from Italy, Giuseppe (1872–1949) and Rosalia (Mercurio) DiMaggio (1878–1951). He was delivered by a midwife identified on his birth certificate as Mrs. J. Pico. He was named after his father; "Paolo" was in honor of Giuseppe's favorite saint, Saint Paul. The family moved to San Francisco, California, when Joe was a year old.

Lawrence Peter "Yogi" Berra (born May 12, 1925) is a former American Major League Baseball catcher, outfielder, and manager. He played almost his entire 19-year baseball career (1946–1965) for the New York Yankees. Berra was one of only four players to be named the Most Valuable Player of the American League three times and is one of only six managers to lead both American and National League teams to the World Series. As a player, coach, or manager, Berra appeared in 21 World Series. He was elected to the Baseball Hall of Fame in 1972.

Berra is widely regarded as one of the greatest catchers in baseball history. According to the win shares formula developed by sabermetrician Bill James, Berra is the greatest catcher of all time and the 52nd greatest non-pitching player in major-league history.

Berra, who quit school after the eighth grade, has a tendency toward malapropism and fracturing the English language. "It ain't over till it's over" is arguably his most famous example, often quoted. Simultaneously denying and confirming his reputation, Berra once stated, "I really didn't say everything I said."

Willie Howard Mays, Jr. (born May 6, 1931) is a retired American professional baseball player who played the majority of his major league career with the New York and San Francisco Giants before finishing with the New York Mets. Nicknamed The Say Hey Kid, Mays was elected to the Baseball Hall of Fame in 1979, his first year of eligibility. Most baseball fans and historians agree that Mays was the greatest all-around baseball player to have played in the Major Leagues.

Mays won two MVP awards and tied Stan Musial's record with 24 appearances in the All-Star Game. Mays ended his career with 660 home runs, third at the time of his retirement, and currently fourth all-time. An outstanding center fielder, he won a record-tying twelve Gold Gloves starting the year the award was introduced six seasons into his career.

In 1999, Mays placed second on The Sporting News' List of the 100 Greatest Baseball Players, making him the highest-ranking living player. Later that year, he was also elected to the Major League Baseball All-Century Team. Mays is one of five NL players to have eight consecutive 100-RBI seasons, along with Mel Ott, Sammy Sosa, Chipper Jones and Albert Pujols. Mays hit 50 or more home runs in both 1955 and 1965. This time span represents the longest stretch between 50 plus home run seasons for any player in Major League Baseball history.

Tallulah Brockman Bankhead (January 31, 1902 – December 12, 1968) was an American actress of the stage and screen, talk-show host, and bonne vivante. Bankhead was also known for her deep voice, flamboyant personality, romances with men and women, and support of liberal causes, which broke with the tendency of Southern Democrats at the time to support a more conservative agenda. She was inducted into the Alabama Women's Hall of Fame in 1981.

Bankhead was born in Huntsville, Alabama, to William Brockman Bankhead and Adelaide Eugenia "Ada" Bankhead (née Sledge). The event took place on the second floor of what is now known as the Isaac Schiffman Building; a marker has been erected to commemorate the site and, in 1980, the building was placed on the National Register of Historic Places. "Tallu" was named after her paternal grandmother. Her mother died as a result of blood poisoning on February 23, 1902, shortly after Tallulah's birth, and is buried in Huntsville's historic Maple Hill Cemetery. Tallulah has been described as "an extremely homely child", overweight and with a deep, husky voice resulting from chronic bronchitis. However, others described her as an exhibitionist, performer, personality, and star from the very beginning.