Oituz

{{Other uses}}

{{Infobox Romanian subdivision

|type = commune

|county = Bacău

|population_total = auto

|name=Oituz

|image_map = Oituz jud Bacau.png

|map_caption = Location in Bacău County

|image_flag =

|image_shield =

|image_skyline = Biserica Presfanta Treime Oituz, Bacau.jpg

|image_caption = Catholic church in Oituz

|image_location =

|leader_name = Claudiu Petrișor{{cite web |url=https://prezenta.roaep.ro/locale27092020/romania-pv-final |title=Results of the 2020 local elections |publisher=Central Electoral Bureau |access-date=8 June 2021 |df=dmy-all |archive-date=9 October 2020 |archive-url=https://web.archive.org/web/20201009164915/https://prezenta.roaep.ro/locale27092020/romania-pv-final |url-status=live }}

|leader_party = PNL

|term = 2020–2024

|coordinates={{coord|46|12|N|26|37|E|display=it}}

|elevation = 279

|elevation_min =

|elevation_max =

|area_total = 202.23

|population_as_of =

|population_footnotes =

|postal_code =

|area_code =

|website = {{url|primariaoituz.ro}}

}}

Oituz (formerly Grozești; {{langx|hu|Gorzafalva}}) is a commune in Bacău County, Western Moldavia, Romania. It is composed of six villages: Călcâi (Zöldlonka), Ferestrău-Oituz (Fűrészfalva), Hârja (Herzsa), Marginea, Oituz and Poiana Sărată (Sósmező).

Oituz was the site of three battles during the First World War: the First, Second, and the Third Battle of Oituz.

According to Iorgu Iordan, the commune's name is of Turkic origin; otuz or oltuz means "thirty" in some Turkic languages.Iorgu Iordan; Toponimia romînească, Editura Academiei Republicii Populare Romîne, București, 1963, p. 280Vasile Frățilă, Studii de toponimie și dialectologie, p.39. Editura Excelsior Art, 2002, {{ISBN|9735920603}}{{in lang|ro}} Diana Boc-Sînmărghițan, [http://www.litere.uvt.ro/vechi/documente_pdf/stiintefilologice/2007_integral.pdf "Toponimia văilor Bistra și Sebeș. Glosar (I)"] {{Webarchive|url=https://web.archive.org/web/20131007072526/http://www.litere.uvt.ro/vechi/documente_pdf/stiintefilologice/2007_integral.pdf |date=2013-10-07 }}, p.16, in Analele Universității de Vest din Timișoara, Seria Științe Filologice, XLV, 2007

Poiana Sărată village is part of Transylvania;Memoriile Secțiilor Științifice, Romanian Academy, series IV, vol. XXVII, p.171. in Austria-Hungary, it belonged to Háromszék County, and after a reorganization to Trei Scaune County in Romania until 1950.