Yby Yaú

{{Infobox settlement

| name = Yby Yaú

| image_alt = A view of Yby Yaú, Paraguay from above.

| image_caption = Aerial view of Yby Yaú, Paraguay

| image_skyline = Yby_Yau_aerial_view.jpg

| official_name =

| settlement_type = City and district

| image_flag =

| image_seal =

| pushpin_map = Paraguay

|subdivision_type = Country

|subdivision_name = {{PAR}}

|subdivision_type1 = Department

|subdivision_name1 =Concepción

| elevation_m = 163

| established_title= Foundation

| established_date = 20 December 1984

| founder =

| population_total = 31290{{cite web|url=http://www.dgeec.gov.py/Publicaciones/Biblioteca/proyeccion%20nacional/Proyeccion%20Distrital.pdf|title=Proyección de la población por sexo y edad, según distrito. Revisión 2015|publisher=DGEEC|pages=32–37|access-date=11 November 2015|archive-url=https://web.archive.org/web/20151016011537/http://www.dgeec.gov.py/Publicaciones/Biblioteca/proyeccion%20nacional/Proyeccion%20Distrital.pdf|archive-date=16 October 2015}}

| area_total_km2 = 2420

| population_density_km2 =

|timezone = -4 Gmt

|utc_offset =

|timezone_DST =

|utc_offset_DST =

|postal_code_type = Postal code

|postal_code = 8900

|area_code = 595 39

|blank_name = Climate

|blank_info = Aw

| web =

|coordinates = {{coord|22|57|47|S|56|32|09|W|region:PY|display=inline,title}}

}}

Yby Yaú ({{langx|gn|Yvy Ja'u}}) is a district and city located in the department of Concepción of Paraguay.