O Sar
{{Infobox settlement
| name = O Sar
| native_name =
| native_name_lang = es
| settlement_type = Comarca
| image_skyline =
| image_alt =
| image_caption =
|
| flag_alt =
| image_shield =
| shield_alt =
| nickname =
| motto =
| image_map = Comarca Sar.png
| map_alt =
| map_caption =
| coordinates =
| coordinates_footnotes =
| subdivision_type = Country
| subdivision_name = {{flag|Spain}}
| subdivision_type1 = Autonomous community
| subdivision_name1 = Galicia
| subdivision_type2 = Province
| subdivision_name2 = A Coruña
| seat_type = Capital
| seat = Padrón
| parts_type = Municipalities
| parts_style = list
| leader_party =
| leader_title =
| leader_name =
| area_footnotes =
| area_total_km2 = 177.4
| elevation_footnotes =
| elevation_m =
| population_footnotes =
| population_total = 17354
| population_as_of = 2005
| population_density_km2 = auto
| population_demonym = Sareños
| population_note =
| blank_name_sec1 = Largest municipality
| blank_info_sec1 =
| timezone1 = CET
| utc_offset1 = +1
| timezone1_DST = CEST
| utc_offset1_DST = +2
| postal_code_type = Postal code
| postal_code =
| area_code_type = Dialing code
| area_code =
| website =
| footnotes =
}}
Sar is a comarca in the province of A Coruña, Galicia, western Spain. The overall population of this local region is 17,354 (2005).