Ernest Duke

{{Short description|Canadian politician (1880–1947)}}

{{Use Canadian English|date=January 2023}}

{{Infobox officeholder

| image =Ernest_Duke.png

| imagesize = 180px|

| name = Ernest Duke

| caption =

| birth_date ={{Birth date|1880|12|21}}

| death_date = {{death date and age|1954|1|19|1880|12|21}}

| death_place = Victoria, British Columbia

| birth_place = Mono Mills, Albion Township, Peel County, Ontario

| residence =

| office = Member of the Legislative Assembly of Alberta

| constituency =Rocky Mountain

| term_start = 1935

| term_end = 1940

| predecessor =George Edward Cruickshank

| successor = District abolished

| office2 =

| constituency2 =Pincher Creek-Crowsnest

| term_start2 = 1940

| term_end2 = 1948

| predecessor2 = District established

| successor2 = William Kovach

| party = Social Credit

| religion =

| occupation =

| spouse =

}}

Lawrence Ernest Oscar Duke (December 21, 1880 – January 19, 1954) was a provincial politician from Alberta, Canada. He served as a member of the Legislative Assembly of Alberta from 1935 to 1948, sitting with the Social Credit caucus in government.{{Cite web|url=https://books.google.com/books?id=A11LAAAAMAAJ&q=%22Social+Credit.+Address:+Spirit+River.+DUKE,+LAWRENCE+ERNEST+OSCAR,+%28Pincher+Creek-Crows+Nest%29*%22|title = Guide Parlementaire Canadien|year = 1947}}