Albert John Robertson (September 17, 1864 – January 3, 1952) was a Canadian politician from Alberta and the first Leader of the Opposition in the province's history.

As Conservative leader R. B. Bennett was defeated in the election, Robertson led the two person opposition against Alexander Cameron Rutherford's Liberal government, which controlled the rest of the 25-seat assembly.

[6] He called for public ownership of the telephone system[7] and railways[8] at a time when the government's policy was to leave both under the control of the private sector.

[7] When the legislature established new electoral boundaries, Robertson objected to provisions giving Edmonton and Calgary two seats each, and argued that the maximum time between elections—five years—was too long.

Third, Hiebert had little interest in partisan politics, and sided increasingly with the government; he eventually left the Conservative Party and unsuccessfully sought re-election as an independent.