15th Manitoba Legislature
The members of the 15th Manitoba Legislature were elected in the Manitoba general election held in August 1915. The legislature sat from January 6, 1916, to March 27, 1920.
The Liberal Party led by Tobias Norris formed the government.
Albert Prefontaine of the Conservatives was Leader of the Opposition.
On January 16, 1916, a bill was passed to amend the Manitoba Election Act to grant women the right to vote. Manitoba became the first Canadian province where women were allowed to vote and hold office.
In a referendum held on March 13, 1916, the province's voters supported prohibition. On June 1, the Manitoba Temperance Act came into effect, which banned the sale of liquor in the province, except by pharmacists for medical purposes. However, bringing alcohol into the province for personal use or for wholesale outside the province was still legal.
Also in 1916, the Workers Compensation Act was passed, which established the Workers Compensation Board of Manitoba. The act established an employer-funded compensation system for work-related injuries or illness and, in exchange, employers were granted protection against lawsuits by workers for these occurrences.
In 1918, a Minimum Wage Act was passed. Manitoba and British Columbia were the first provinces in Canada to introduce minimum wage legislation. In 1921, the minimum hourly wage in Manitoba was $0.25. Up until 1931, the minimum wage only applied to female workers.
James Bryson Baird served as speaker for the assembly.
There were five sessions of the 15th Legislature:
| Session | Start | End |
| 1st | January 6, 1916 | April 1, 1916 |
| 2nd | January 11, 1917 | March 9, 1917 |
| 3rd | January 17, 1918 | March 6, 1918 |
| 4th | January 21, 1919 | March 14, 1919 |
| 5th | January 22, 1920 | March 27, 1920 |
Douglas Colin Cameron was Lieutenant Governor of Manitoba until August 3, 1916, when James Albert Manning Aikins became lieutenant governor.
Members of the Assembly
The following members were elected to the assembly in 1915:Notes:
By-elections
By-elections were held to replace members for various reasons:| Electoral district | Member elected | Affiliation | Election date | Reason |
| Rupertsland | John Morrison | Independent-Liberal | September 16, 1916 | New riding created |
| Iberville | Arthur Boivin | Conservative | November 1, 1917 | A Bénard named to Senate of Canada |
| Roblin | William James Westwood | Independent-Liberal | November 19, 1917 | F Newton resigned seat |
| Killarney | George Grierson | Liberal | November 30, 1917 | G Grierson appointed Minister of Public Works |
| Winnipeg North B | Robert Jacob | Union | January 15, 1918 | R Rigg ran for federal seat |