During its history, Alfa Romeo has competed successfully in many different categories of motorsport, including Grand Prix motor racing, Formula One, sportscar racing, touring car racing and rallies. They have competed both as a constructor and an engine supplier, via works entries (usually under the name Alfa Corse or Autodelta) and private entries. The first racing car was made in 1913, three years after the foundation of A.L.F.A., the 40-60HP had 6 liter straight-4 engine. Alfa Romeo quickly gained a good name in motorsport and gave a sporty image to the whole marque.

Alfa Romeo started motor racing almost immediately after it was founded. A.L.F.A. ventured into motor racing in 1911, with drivers Franchini and Ronzoni competing in the Targa Florio with two 24 HP models. The marque's first success came in 1913 when Nino Franchini finished second in Parma-Poggio Berceto race with a 40-60HP. Giuseppe Merosi built a very advanced racing car in 1914, which was named the Grand Prix. In 1920 Giuseppe Campari won the race at Mugello with a 40-60HP, whilst Enzo Ferrari was second in Targa Florio in the same year. A year later Giuseppe Campari won at Mugello again. Ugo Sivocci won the 1923 Targa Florio with an RL and Antonio Ascari took second. Sivocci's car was painted with the green cloverleaf on a white background that was to become Alfa's good luck token.

Alfa Romeo Automobiles S.p.A. (Italian pronunciation: [ˈalfa roˈmɛːo]) is an Italian manufacturer of cars. Founded as A.L.F.A. on June 24, 1910, in Milan, the company has been involved in car racing since 1911, and has a reputation for building expensive sports cars. The company was owned by Italian state holding company Istituto per la Ricostruzione Industriale between 1932 and 1986, when it became a part of the Fiat Group, and since February 2007 a part of Fiat Group Automobiles S.p.A.

The company that became Alfa Romeo was founded as Società Anonima Italiana Darracq (SAID) in 1906 by the French automobile firm of Alexandre Darracq, with some Italian investors. In the late 1909, the Italian Darracq cars were selling slowly and a new company was founded named A.L.F.A. (Anonima Lombarda Fabbrica Automobili, English: Lombard Automobile Factory, Public Company), initially still in partnership with Darracq. The first non-Darracq car produced by the company was the 1910 24 HP, designed by Giuseppe Merosi. A.L.F.A. ventured into motor racing, with drivers Franchini and Ronzoni competing in the 1911 Targa Florio with two 24 HP models. In August 1915 the company came under the direction of Neapolitan entrepreneur Nicola Romeo, who converted the factory to produce military hardware for the Italian and Allied war efforts. In 1920, the name of the company was changed to Alfa Romeo with the Torpedo 20-30 HP becoming the first car to be badged as such.

Romeo is one of the title characters in William Shakespeare's Romeo and Juliet. Romeo is the son of old Montague and his wife, who secretly loves and marries Juliet, a member of the rival House of Capulet. Forced into exile by his slaying of Tybalt, Juliet's cousin, in a duel, Romeo commits suicide upon hearing falsely of Juliet's death.

The character's origins can be traced as far back as Pyramus, who appears in Ovid's Metamorphoses, but the first modern incarnation of Romeo is Mariotto in the 33rd of Masuccio Salernitano's Il Novellino (1476). This story was adapted by Luigi da Porto as Giulietta e Romeo (1530), and Shakespeare's main source was an English verse translation of this text by Arthur Brooke. Although both Salernitano and da Porto claimed that their stories had historical basis, there is little evidence that this is the case.

Romeo is one of the most important characters of the play, and has a consistent presence throughout it. His role as an idealistic lover has led the word "Romeo" to become a synonym for a passionate male lover in various languages. Although often treated as such, it is not clear that "Montague" is a surname in the modern sense.