Untersteckholz

Infobox Swiss town
subject_name = Untersteckholz
municipality_name = Untersteckholz
municipality_type = municipality
imagepath_coa = Untersteckholz-coat of arms.svg|pixel_coa=


languages = German
canton = Berne
iso-code-region = CH-BE
district = Aarwangen
lat_d=47|lat_m=13|lat_NS=N|long_d=7|long_m=51|long_EW=E
postal_code = 4916
municipality_code = 0343
area = 2.8
elevation = 492|elevation_description=
population = 157|populationof = January 2005 | popofyear = 2005
website =
mayor = |mayor_asof=|mayor_party=
mayor_title = |list_of_mayors =
places =
demonym =
neighboring_municipalities= Busswil bei Melchnau, Langenthal, Melchnau, Obersteckholz, Pfaffnau (LU), Roggwil
twintowns = |

Untersteckholz is a municipality in the district of Aarwangen in the canton of Bern in Switzerland.