Template:Canadian politics by time in office
- Murray (NS) – 26 years
- Manning (AB) – 25 years
- Mowat (ON) – 23 years █ Liberal
- Smallwood (NL) – 22 years
- Bracken (MB) – 20 years
- Bennett (BC) – 20 years █ Social Credit
- Duplessis (QC) – 18 years
- Douglas (SK) – 17 years
- Hatfield (NB) – 16 years
- Taschereau (QC) – 15 years
- Gouin (QC) – 15 years
- Macdonald (NS) – 15 years
- Roblin (MB) – 14 years
- Lougheed (AB) – 14 years
- Bourassa (QC) – 14 years
- Klein (AB) – 14 years
- Davis (ON) – 13 years █ Progressive Conservative
- Blair (NB) – 13 years
- Frost (ON) – 12 years █ Progressive Conservative
- McBride (BC) – 12 years █ Conservative
- McNair (NB) – 12 years
- Campbell (PE) – 12 years