The 34th New Brunswick Legislative Assembly represented New Brunswick between May 10, 1917 and September 16, 1920.
Gilbert Ganong served as Lieutenant-Governor of New Brunswick in 1917. He was succeeded by William Pugsley in November of that year.
William Currie was chosen as speaker in 1917. J.E. Hetherington became speaker after Currie resigned in 1919.
The Liberal Party led by Walter Edward Foster defeated the ruling Conservative party to form the government.
| Electoral District | Name | Party |
|---|---|---|
| St. John County | John M. Baxter | Conservative |
| Thomas R. Carson | Conservative | |
| York | James K. Pinder | Conservative |
| John A. Young | Conservative | |
| William C. Crocket | Conservative | |
| Samuel L.B. Hunter | Liberal | |
| Westmorland | Ernest A. Smith | Liberal |
| Francis J. Sweeney | Liberal | |
| Clement M. Leger | Liberal | |
| Fred Magee | Liberal | |
| King's | James A. Murray | Conservative |
| George B. Jones | Conservative | |
| Hedley V. Dickson | Conservative | |
| Queen's | George Herbert King | Liberal |
| Judson E. Hetherington | Liberal | |
| Charlotte | Henry I. Taylor | Conservative |
| R. Watson Grimmer | Conservative | |
| Scott D. Guptill | Conservative | |
| Harry D. Smith | Conservative | |
| Northumberland | John P. Burchill | Liberal |
| Robert Murray | Liberal | |
| David V. Allain | Liberal | |
| Francis C. McGrath | Liberal | |
| Sunbury | David W. Mersereau | Liberal |
| Robert H. Smith | Liberal | |
| Kent | Philias J. Melanson | Liberal |
| Auguste J. Bordage | Liberal | |
| A. Allison Dysart | Liberal | |
| Gloucester | Peter J. Veniot | Liberal |
| James P. Byrne | Liberal | |
| Seraphin R. Leger | Liberal | |
| Jean G. Robichaud | Liberal | |
| Carleton | Benjamin F. Smith | Conservative |
| William S. Sutton | Conservative | |
| George L. White [1] | Conservative | |
| Restigouche | Arthur T. Leblanc | Liberal |
| William Currie | Liberal | |
| Albert | Lewis Smith | Conservative |
| John L. Peck | Conservative | |
| Victoria | John F. Tweeddale | Liberal |
| James Burgess [2] Walter Edward Foster (1917) |
Liberal | |
| Madawaska | Louis-Auguste Dugal | Liberal |
| Joseph E. Michaud | Liberal | |
| City of St. John | John R. Campbell | Conservative |
| Leonard P. Tilley | Conservative | |
| Frank L. Potts | Conservative | |
| William Francis Roberts | Liberal | |
| City of Moncton | C.W. Robinson | Liberal |
Notes:
| Preceded by 33rd New Brunswick Legislative Assembly |
Legislative Assemblies of New Brunswick 1917-1920 |
Succeeded by 35th New Brunswick Legislative Assembly |