Sten De Geer

{{Infobox scientist

| name = Sten De Geer

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| birth_date = {{birth date|df=yes|1886|04|26}}

| birth_place = Stockholm

| death_date = {{death date and age|1933|6|2|1886|04|26|df=yes}}

| death_place = Gothenburg

| citizenship = Sweden

| nationality = Swede

| field = Geography, Ethnography

| work_institutions = Stockholms högskola
Stockholm School of Economics
Uppsala University
Göteborgs högskola

| alma_mater = Uppsala University

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| father = Gerard De Geer

| known_for = Baltoscandia
Joint valley landscape
Norrland terrain
South Småland peneplain

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Sten De Geer was a Swedish professor of geography and ethnography.{{Cite book |last1=Congress |first1=Library of |url=https://books.google.com/books?id=EC4PAQAAMAAJ |title=The National Union Catalog, Pre-1956 Imprints: A Cumulative Author List Representing Library of Congress Printed Cards and Titles Reported by Other American Libraries |last2=Subcommittee |first2=American Library Association Committee on Resources of American Libraries National Union Catalog |date=1971 |publisher=Mansell |isbn=978-0-7201-0003-7 |pages=19 |language=en}} As son of geologist Gerard De Geer Sten was born into the Swedish nobility holding the title of baron.{{Cite book |last=Martin |first=Geoffrey J. |url=https://books.google.com/books?id=CbG6BwAAQBAJ&dq=Sten+De+Geer+Swedish+baron&pg=PA1058 |title=American Geography and Geographers: Toward Geographical Science |date=2015 |publisher=Oxford University Press |isbn=978-0-19-533602-3 |pages=1058 |language=en}}