Guillermo Flores Avendaño

{{Short description|President of Guatemala (1894–1992)}}

{{family name hatnote|Flores|Avendaño|lang=Spanish}}

{{Infobox officeholder

| honorific-prefix = General of Division

| image = Retrato oficial de Presidente Guillermo Flores Avendaño (cropped).jpg

| caption =

| imagesize = 200px

| order = President of the Republic of Guatemala

| term_start = October 26, 1957

| term_end = March 2, 1958

| signature =

| predecessor = Óscar Mendoza Azurdia

| successor = Miguel Ydígoras Fuentes

| birth_date = {{birth date|df=yes|1894|06|17}}{{citation needed|date=July 2020}}

| birth_place = San Andrés Itzapa, Chimaltenango Department, Guatemala

| death_date = {{death date and age|df=yes|1982|05|26|1894|06|17}}

| death_place = Guatemala City, Guatemala

| spouse =

| party =

| occupation =

}}

Guillermo Flores Avendaño (17 June{{citation needed|date=July 2020}} 1894 – 26 May 1982{{Cite web|url=https://www.rulers.org/indexf1.html|title = Index Fa-Fl}}{{Cite news|url=https://elpais.com/diario/1982/05/29/agenda/391471202_850215.html|title = Guillermo Flores, ex presidente de Guatemala|newspaper = El País|date = 28 May 1982}}) was a Guatemalan military officer who served as president of Guatemala from October 1957 to March 1958. In March 1957, he was designated as second in the presidential line of succession by Congress (preceded by Luis Arturo González López).{{Cite web |date=2024-01-12 |title=Presidentes en Guatemala: quiénes son los 26 predecesores de Bernardo Arévalo y qué hechos han marcado su gestión |url=https://www.prensalibre.com/hemeroteca/presidentes-en-guatemala-quienes-son-los-26-predecesores-de-bernardo-arevalo-y-que-hechos-han-marcado-su-gestion/ |access-date=2024-06-02 |language=es-GT}} He assumed the role of provisional president in October of that same year after the results of the 1957 general elections were annulled after a coup on allegations of electoral fraud.

Flores Avendaño's tenure ended upon the inauguration of Miguel Ydígoras Fuentes who won the 1958 general elections. He was subsequently appointed as Minister of Defense under the Ydígoras Fuentes government.{{cite web|url=https://www.nytimes.com/1958/03/04/archives/cabinet-in-guatemala-outgoing-provisional-chief-named-defense.html|title=Outgoing Provisional Chief Named Defense Minister |date=March 4, 1958|work=New York Times|access-date=2008-08-11}}