Cernu

{{for|the village in Bacău County|Poduri}}

{{Infobox river

| name = Cernu

| native_name =

| native_name_lang =

| name_other =

| name_etymology =

| image =

| image_size =

| image_caption =

| pushpin_map = Romania

| subdivision_type1 = Country

| subdivision_name1 = Romania

| subdivision_type2 = Counties

| subdivision_name2 = Bacău County

| subdivision_type3 = Villages

| subdivision_name3 = Cernu, Românești

| length = {{convert|16|km|abbr=on}}

| width_min =

| width_avg =

| width_max =

| depth_min =

| depth_avg =

| depth_max =

| discharge1_location=

| discharge1_min =

| discharge1_avg =

| discharge1_max =

| source1 = Bulimandru Hill

| source1_location = Berzunți Mountains

| source1_coordinates= {{coord|46|24|42|N|26|34|42|E|display=inline}}

| source1_elevation = {{convert|682|m|abbr=on}}

| mouth = Tazlău

| mouth_location = Românești

| mouth_coordinates = {{coord|46|29|31|N|26|40|42|E|display=inline,title}}

| mouth_elevation = {{convert|274|m|abbr=on}}

| progression = {{RTazlău}}

| river_system =

| basin_size = {{convert|65|km2|abbr=on}}

| tributaries_left =

| tributaries_right = Păltiniș, Buda

| custom_label =

| custom_data =

| extra =

}}

The Cernu is a right tributary of the river Tazlău in Romania.{{GeoSource|RO|Atlas|409|XII.1.69.33.11}}Ovidiu Gabor – {{Cite web |url=http://www.riob.org/euro-riob/cracovie/27_sep_2004/costrecoverymechanism.pdf |title=Economic Mechanism in Water Management |archive-url=https://web.archive.org/web/20090305111215/http://www.riob.org/euro-riob/cracovie/27_sep_2004/costrecoverymechanism.pdf |archive-date=5 March 2009 |url-status=dead }}, map page 10 It discharges into the Tazlău in Românești. Its length is {{convert|16|km|abbr=on}} and its basin size is {{convert|65|km2|abbr=on}}.{{GeoSource|RO|Atlas|409|XII.1.69.33.11}}