Carlo Zangarini i (9 December 1873 – 19 July 1943) was an Italian librettist, poet, and academic. He lived his entire life in the city of Bologna, and is best remembered today for penning the libretti for the operas La fanciulla del West (1910) by composer Giacomo Puccini, I gioielli della Madonna (1911) by composer Ermanno Wolf-Ferrari, and Conchita (1911) by Riccardo Zandonai.