Re or RE may refer to:
A regular expression, regex or regexp (sometimes called a rational expression) is a sequence of characters that define a search pattern.
The Republican Party, also referred to as the GOP (Grand Old Party), is one of the two major political parties in the United States; the other is its historic rival, the Democratic Party.
Real Madrid Club de Fútbol (Spanish pronunciation: [reˈal maˈðɾið ˈkluβ ðe ˈfuðβol] (listen), meaning Royal Madrid Football Club), commonly referred to as Real Madrid, is a Spanish professional football club based in Madrid.
Ireland (Irish: Éire [ˈeːɾʲə] (listen)), also known as the Republic of Ireland (Poblacht na hÉireann), is a country in north-western Europe occupying 26 of 32 counties of the island of Ireland.
The Renaissance (UK: , US: ) is a period in European history, covering the span between the 14th and 17th centuries and marking the transition from the Middle Ages to modernity.
Red Hot Chili Peppers are an American rock band formed in Los Angeles in 1983. The group's musical style primarily consists of rock with an emphasis on funk, as well as elements from other genres such as punk rock and psychedelic rock.
Laura Jeanne Reese Witherspoon (born March 22, 1976) is an American actress, producer, and entrepreneur.
The respiratory system (also respiratory apparatus, ventilatory system) is a biological system consisting of specific organs and structures used for gas exchange in animals and plants.
Research is "creative and systematic work undertaken to increase the stock of knowledge, including knowledge of humans, culture and society, and the use of this stock of knowledge to devise new applications." It is used to establish or confirm facts, reaffirm the results of previous work, solve new or existing problems, support theorems, or develop new theories.