Allegro may mean:

• The musical tempo meaning "fast"
• Allegro library, a computer game programming library
• Allegro (typeface), a typeface designed in 1936
• Allegro (airline), a charter airline based in Mexico City
• Allegro (auction), a Polish online auction website, also known as Aukro (Czech Republic), TeszVesz (Hungary) and Av-Av (Russia and Ukraine)
• Allegro (musical), a 1947 musical by Rodgers and Hammerstein
• Allegro (band), a Christian progressive metal band
• Allegro Common Lisp, a variant of the Common Lisp programming language
• Allegro Realty Advisors, a global corporate real estate consultancy based in Cleveland, Ohio
• Austin Allegro, a car once manufactured by British Leyland

Allegro | Allegro | Allegro | Allegro (ujednoznacznienie)