Loiron

{{Infobox French commune

|name = Loiron

|image = Église de Loiron - Vue générale (2).jpg

|caption = The church of Saint-Gervais and Saint-Protais

|image coat of arms = Blason Loiron.svg

|arrondissement = Laval

|canton = Loiron

|commune = Loiron-Ruillé

|coordinates = {{coord|48.06|-0.9339|format=dms|display=inline,title}}

|elevation m = 140

|elevation min m = 88

|elevation max m = 172

|area km2 = 22.92

|population = 1797

|population date = 2022

|population footnotes = {{cite web|url=https://www.insee.fr/fr/statistiques/fichier/8290591/ensemble.pdf|title=Populations de référence 2022|language=fr|trans-title=Reference populations 2022|publisher=INSEE|date=December 2024}}

|INSEE = 53137

|postal code = 53320

}}

Loiron ({{IPA|fr|lwaʁɔ̃}}) is a former commune in the Mayenne department in north-western France. On 1 January 2016, it was merged into the new commune of Loiron-Ruillé.[https://www.legifrance.gouv.fr/eli/arrete/2015/11/18/INTB1525736A/jo/texte Arrêté préfectoral] 18 November 2015