The Official Opposition Shadow Cabinet in Canada was formed after the 2020 Conservative Party of Canada leadership election. Erin O'Toole appointed a Shadow cabinet in September 2020.

By Member 101 MPs have served in the Official Opposition Cabinet at one point in the 43rd Parliament. 42 MPs are currently Senior Shadow Ministers shadowing a specific Minister with portfolio in the House of Commons. In addition there are 8 other Shadow Ministers with specific roles without a ministerial equivalent. Highlight indicates that a Member is a current Senior Shadow Minister. Of the senior members of Shadow Cabinet, 32 are men and 10 are women. 6 are visible minorities (14.3%). Under Andrew Scheer, most senior Shadow Ministers also had a deputy critic for their file. This has been discontinued under his successor, Erin O'Toole. Shadow ministers are often referred to as "critics".