Bernhard Bielenstein

{{Infobox artist

| name = Bernhard Bielenstein

| image = Bernhard Bielenstein.jpg

| image_size = 200px

| caption =

| birth_name =

| birth_date = {{osd|21 August|1877|9}}

| birth_place = Doblen, Kreis Doblen, Courland Governorate, Russian Empire
(present-day Dobele, Dobele Municipality, Latvia)

| death_date = {{Death date and age|1959|04|14|1877|03|31|df=yes}}

| death_place = Heilbronn, Landkreis Heilbronn, Baden-Württemberg, Germany

| nationality = Baltic German

| known_for = Architecture

| training =

| movement = Art Nouveau

| famous works =

| patrons =

| awards =

| education = Riga Polytechnic Institute

}}

Bernhard Max August Bielenstein ({{osd|21 August|1877|9}}[https://bbld.de/0000000040928883 Bielenstein, Bernhard] in BBLD - Baltisches biografisches Lexikon digital – 14 April 1959) was a Baltic German architect.

Bernhard Bielenstein was born in Doblen in a family of pastor, linguist and ethnographer August Johann Gottfried Bielenstein. He studied at the Riga Polytechnic Institute (present-day Riga Technical University). He graduated in 1904, and thereafter continued his studies in Berlin. In 1905 he set up his own architectural firm in Riga. In addition, he worked at the Riga Mortgage Association. In 1907 he married Betty von Bergmann. During World War I, he worked at different military offices in Pskov and Vitebsk.

From 1918, he again worked as an architect in Riga. In 1925 Riga German Landlord Society elected Bielenstein as a secretary. In 1931 he became member of the board of the Riga sickness fund. In 1939, he together with majority of Baltic Germans moved to Germany. He died in Heilbronn. In Riga he designed more than 30 residential buildings, mostly in a rationalistic form of Art Nouveau, though some of his buildings also bear influences from Latvian National Romantic style.{{cite book |last= Krastins|first= Janis|date= 1996|title= Riga. Jugendstilmetropole. Art Nouveau Metropolis. Jugendstila Metropole.|location= Riga|publisher= Baltika|page= 339|isbn=9984-9178-1-9}}