Lengau

{{Infobox settlement

| name = Lengau

| native_name =

| settlement_type = Municipality

| image_skyline = Lengau.jpg

| imagesize =

| image_caption =

| image_shield = wappen at lengau.png

| shield_size = 80x110px

| shield_link =

| pushpin_map = Austria

| pushpin_mapsize = 270

| pushpin_map_caption = Location within Austria

| image_map =

| mapsize =

| map_alt =

| map_caption = Location within Braunau am Inn district

| coordinates = {{coord|48|00|00|N|13|13|00|E|display=inline,title}}

| subdivision_type = Country

| subdivision_name = Austria

| subdivision_type1 = State

| subdivision_name1 = Upper Austria

| subdivision_type2 = District

| subdivision_name2 = Braunau am Inn

| parts_type =

| parts_style = para

| p1 =

| leader_title = Mayor

| leader_name = Erich Rippl

| leader_party = {{Polparty|Austria| SPÖ }}

| leader_title1 =

| leader_name1 =

| area_footnotes = {{Austria population Wikidata|area_footnotes}}

| area_total_km2 = {{Austria population Wikidata|area_total_km2}}

| area_metro_km2 =

| elevation_m = 532

| elevation_max_m =

| elevation_min_m =

| population_as_of = {{Austria population Wikidata|population_as_of}}

| population_footnotes = {{Austria population Wikidata|population_footnotes}}

| population_total = {{Austria population Wikidata|population_total}}

| population_urban =

| population_metro =

| population_note =

| population_density_km2 = auto

| established_title =

| established_date =

| timezone = CET

| timezone_DST = CEST

| utc_offset = +1

| utc_offset_DST = +2

| registration_plate = BR

| postal_code_type = Postal code

| postal_code = 5211

| area_code_type = Area code

| area_code = 07746

| website = [http://www.gemeindelengau.at www.gemeindelengau.at]

| footnotes =

}}

Lengau is a municipality in the district of Braunau am Inn in the Austrian state of Upper Austria.