Guido Menasci

{{Use dmy dates|date=May 2021}}

{{Infobox musical artist

| background = person

| name = Guido Menasci

| image = Guido Menasci.jpg

| birth_date = {{Birth date|1867|03|24|df=y}}

| birth_place = Livorno

| origin = Italy

| death_date = {{Death date and age|1925|12|27|1867|03|24|df=y}}

| death_place = Livorno

| genre = Opera

| occupation = Librettist

| years_active =

| spouse =

| partner =

}}

Guido Menasci (24 March 1867 – 27 December 1925) was an Italian opera librettist.

His best-known work is Cavalleria rusticana written with Giovanni Targioni-Tozzetti. He also provided the libretti for Mascagni's I Rantzau, Zanetto, for Umberto Giordano's Regina Diaz and Viktor Parma's Stara pesem (Old Song).

Menasci was born and died in Livorno.