San Ildefonso Villa Alta

{{Infobox settlement

|name = San Ildefonso Villa Alta

|settlement_type =Municipality and town

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|map_caption = Location of the municipality in Oaxaca

|pushpin_map =Mexico

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|pushpin_map_caption =Location in Mexico

|subdivision_type = Country

|subdivision_name = {{flag|Mexico}}

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|subdivision_name1 = Oaxaca

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|area_total_km2 =136.52

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|population_as_of =2005

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|population_total =3100

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|timezone = Central Standard Time

|utc_offset = -6

|timezone_DST = Central Daylight Time

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|coordinates = {{coord|17|20|N|96|09|W|region:MX|display=inline,title}}

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San Ildefonso Villa Alta is a town and municipality in Oaxaca in south-western Mexico. The municipality covers an area of 136.52 km².

It is part of the Villa Alta District in the center of the Sierra Norte Region.

As of 2005, the municipality had a total population of 3,100.{{cite web|title=San Ildefonso Villa Alta|url=http://www.e-local.gob.mx/work/templates/enciclo/oaxaca/municipios/20156a.htm|work=Enciclopedia de los Municipios de México|publisher=Instituto Nacional para el Federalismo y el Desarrollo Municipal|accessdate=June 12, 2009}}