San Martín is a very common place name in Hispanic countries
Argentina
- San Martín (Buenos Aires), capital of the General San Martín district
- San Martín, capital of the department of San Martín in province of Mendoza
Colombia
- San Martín, municipality of Cesar department
- San Martín, municipality of Meta department
- San Martín de Loba, municipality of Bolívar department
El Salvador
- San Martín (San Salvador), municipality of the department of San Salvador
Guatemala
- San Martín Jilotepeque, municipality of the department of Chimaltenango
- San Martín Sacatepéquez, municipality of the department of Quetzaltenango
- San Martín Zapotitlán, municipality of the department of Retalhuleu
Peru
- San Martín, region
Spain
- San Martín de Boniches, province of Cuenca
- San Martín de la Vega, autonomous community of Madrid
- San Martín de la Vega del Alberche, province of Ávila
- San Martín de la Virgen de Moncayo, province of Zaragoza
- San Martín del Castañar, Salamanca province
- San Martín del Pimpollar, province of Ávila
- San Martín del Rey Aurelio, Asturias
- San Martín del Río, province of Teruel
- San Martín de Montalbán, province of Toledo
- San Martín de Oscos, Asturias
- San Martín de Pusa, province of Toledo
- San Martín de Rubiales, province of Burgos
- San Martín de Trevejo, province of Cáceres
- San Martín de Unx, Navarre
- San Martín de Valdeiglesias, autonomous community of Madrid
- San Martín de Valderaduey, province of Zamora
- San Martín de Valvení, province of Valladolid
- San Martín y Mudrián, province of Segovia