Ottenstein

{{Infobox German location

|name = Ottenstein

|image_coa =

|coordinates = {{coord|51|57|N|09|24|E|format=dms|display=inline,title}}

|image_plan = Ottenstein in HOL.svg

|state = Niedersachsen

|district = Holzminden

|Samtgemeinde = Bodenwerder-Polle

|elevation = 275

|area = 13.59

|postal_code = 31868

|area_code = 05286

|licence = HOL

|Gemeindeschlüssel = 03 2 55 031

|divisions = 2

|website = [http://www.ottensteiner-hochebene.de www.ottensteiner-hochebene.de]

|mayor = Manfred Weiner

|party = CDU

}}

Ottenstein is a municipality in the district of Holzminden, in Lower Saxony, Germany.{{cite web|url=https://www.citypopulation.de/php/germany-niedersachsen.php?cityid=03255031 |title=Populations of Ottenstein in Holzminden (Lower Saxony)}}