Luigi Pacini (25 March 1767 – 2 May 1837) was an Italian opera singer who appeared on the principal stages of his native country as well as in Spain and Austria in a career that spanned over 30 years.

The family moved to Spain in 1798 where Pacini was engaged as the leading tenor in the Italian opera company of the Teatre de la Santa Creu in Barcelona.

He sang the role of Ferrando in the first Barcelona performance of Mozart's Così fan tutte in the 1798–1799 season and remained with company for three years.

[4] On his return to Italy in 1801 and through 1804, Pacini sang regularly at Milan's La Scala and Turin's Teatro Regio in leading tenor roles.

[6] Between 1816 and 1832 he also created twelve roles in operas composed by his son Giovanni, including Mustafà in La schiava in Bagdad and Ficcanaso in Il convitato di pietra.

[5][7][1] In 1822 Giovanni Pacini had settled in Viareggio in a large villa where his parents, Luigi and Isabella, and two of his siblings, Claudia and Francesco, lived with him.

Their son, who performed as Pietro Andrea Giorgi Pacini, was a noted baritone and the impresario of Lisbon's Teatro de São Carlos for many years.

Pietro's daughter was the soprano Regina Pacini who later married Marcelo de Alvear, the President of Argentina from 1922 to 1928.