Cue sports (sometimes written cuesports), also known as billiard sports, are a wide variety of games of skill generally played with a cue stick which is used to strike billiard balls, moving them around a cloth-covered billiards table bounded by rubber cushions.

Historically, the umbrella term was billiards. While that familiar name is still employed by some as a generic label for all such games, the word's usage has splintered into more exclusive competing meanings in various parts of the world. For example, in British and Australian English, "billiards" usually refers exclusively to the game of English billiards, while in American and Canadian English it is sometimes used to refer to a particular game or class of games, or to all cue games in general, depending upon dialect and context.

There are three major subdivisions of games within cue sports:

More obscurely, there are games that make use of obstacles and targets, and table-top games played with disks instead of balls.

Billiards has a long and rich history stretching from its inception in the 15th century, to the wrapping of the body of Mary, Queen of Scots, in her billiard table cover in 1586, through its many mentions in the works of Shakespeare, including the famous line "let's to billiards" in Antony and Cleopatra (1606–07), and through the many famous enthusiasts of the sport: Mozart, Louis XIV of France, Marie Antoinette, Immanuel Kant, Napoleon, Abraham Lincoln, Mark Twain, George Washington, French president Jules Grévy, Charles Dickens, George Armstrong Custer, Theodore Roosevelt, Lewis Carroll, W.C. Fields, Babe Ruth, Bob Hope, Jackie Gleason, and many others.

Corey Deuel (born November 20, 1977 in Santa Barbara, California) is an American professional pocket billiards (pool) player from West Jefferson, Ohio. Nicknamed "Cash Money", he is an accomplished tournament competitor, having won the US Open Nine-ball Championship in 2001, as well as many other major titles. As of January 2008, Deuel is the second highest ranked pool player in the US by the United States Professional Poolplayers Association. He regularly represents the USA in the Mosconi Cup. In 2010 he again was selected for the US team in the Mosconi Cup and was responsible for winning 2 of the 8 points that the US team won during that event

At the age of 14, Deuel began playing pool at Drexeline Billiards in Drexel Hill, Pennsylvania, before taking to the road in his teen years.

Deuel has been competing professionally since the year 2000.

Deuel is (as of 2007) a member of the International Pool Tour.

Deuel was selected again for Team USA in the 2007 Mosconi Cup, after serving on the team in four previous years. He was not selected in 2008, but again represented his country during the 2009 tournament.

Dennis Orcollo (born January 28, 1979), sometimes called Dennis Orcullo, is a Filipino professional pool player, nicknamed "Surigao" (name from a province in the Philippines) and "RoboCop". He has been called "the Philippines' Money-game King".

Like a number of upcoming players from the Philippines, Orcollo was first seen on television in his contention at the Rising Stars Tournament in 2000.

At the 2002 WPA World Nine-ball Championship, he unexpectedly beat champion Ralf Souquet 9-8 in the last 64, but eventually lost 6-9 to Efren Reyes in the last 32.

In 2006, Orcollo began his campaign in the U.S.. There, he won a number of tournaments, including the Reno Open, the Hard Times Nine-ball Tournament and two bar table events. Because his compatriots had entered a less prestigious event in Asia, Orcollo was the only player from the Philippines to compete in the World Straight Pool Championship, which was ultimately dominated by Thorsten Hohmann. Although he neither won nor received any prize money, Orcollo made a respectable high run of 91. The following year, he made a better straight pool run of 93 at an exhibition^{[clarification needed]} in the USA. Also in 2006, Orcollo won the last edition of the World Pool League tournament against Niels Feijen.