Untersiggenthal

Infobox Swiss town
subject_name = Untersiggenthal
municipality_name = Untersiggenthal
municipality_type = municipality
imagepath_coa = Untersiggenthal-blason.png|pixel_coa=

languages = German
canton = Aargau
iso-code-region = CH-AG
district = Baden
lat_d=47|lat_m=30|lat_NS=N|long_d=8|long_m=15|long_EW=E
postal_code = 5417
municipality_code = 4044
area = 8.36
elevation = 375|elevation_description=
population = 6354|populationof = December 2006 | popofyear = 2006
website = www.untersiggenthal.ch
mayor = |mayor_asof=|mayor_party=
mayor_title = |list_of_mayors =
places =
demonym =
neighboring_municipalities= Brugg, Gebenstorf, Obersiggenthal, Turgi, Villigen, Würenlingen
twintowns = |

Untersiggenthal is a municipality in the district of Baden in the canton of Aargau in Switzerland.