Byron Ingemar Johnson (December 10, 1890 - January 12, 1964) served as premier of British Columbia, Canada, from 1947 to 1952.

He was first elected to the provincial legislature as a Liberal Member of the Legislative Assembly (MLA) in the 1933 election, but was defeated in the 1937 election.

In the 1945 election, he returned to the legislature as an MLA for the Coalition formed by the Liberal and Conservative parties. In 1947, he became premier.

Johnson's government introduced compulsory hospital insurance , and a provincial sales tax, and expanded highways and railways in the province. The coalition collapsed in 1951 when the Conservatives withdrew. Johnson's government was defeated, and Johnson lost his own seat in the 1952 election that resulted in the election of W.A.C. Bennett's Social Credit Party.

Byron Ingemar Johnson is interred in the Ross Bay Cemetery in Victoria, British Columbia.