| Griffin No. 66 | |
| Official Name: | Rural Municipality of Griffin No. 66 |
| Settlement Type: | Rural municipality |
| Other Name: | Hastings No. 66 (1909–1910) |
| Mapsize: | 200 |
| Subdivision Type: | Country |
| Subdivision Name: | Canada |
| Subdivision Type1: | Province |
| Subdivision Name1: | Saskatchewan |
| Subdivision Type2: | Region |
| Subdivision Type3: | Census division |
| Subdivision Name3: | 2 |
| Subdivision Type4: | division |
| Subdivision Name4: | 1 |
| Subdivision Type5: | Federal riding |
| Subdivision Name5: | Souris—Moose Mountain |
| Subdivision Type6: | Provincial riding |
| Subdivision Name6: | Cannington Weyburn-Big Muddy |
| Government Footnotes: | [1] |
| Leader Title: | Reeve |
| Leader Name: | Stacey Lund |
| Leader Title1: | Governing body |
| Leader Name1: | RM of Griffin No. 66 Council |
| Leader Title2: | Administrator |
| Leader Name2: | Tawnya Moore |
| Leader Title3: | Office location |
| Leader Name3: | Griffin |
| Established Title: | Formed |
| Established Title2: | Formed |
| Established Date2: | December 13, 1909 |
| Established Title3: | Name change |
| Established Date3: | January 30, 1910 (from RM of Hastings No. 66) |
| Established Title4: | Name change |
| Established Title5: | Amalgamated |
| Area Footnotes: | (2016) |
| Area Land Km2: | 816.59 |
| Population As Of: | 2016 |
| Population Total: | 438 |
| Population Density Km2: | 0.5 |
| Timezone: | CST |
| Timezone Dst: | CST |
| Coordinates: | 49.654°N -103.429°W[2] |
| Postal Code Type: | Postal code |
| Postal Code: | S0C 1G0 |
| Area Code: | 306 and 639 |
| Blank Name: | Highway(s) |
| Blank1 Name: | Railway(s) |
| Blank2 Name: | Waterway(s) |
The Rural Municipality of Griffin No. 66 (2016 population:) is a rural municipality (RM) in the Canadian province of Saskatchewan within Census Division No. 2 and Division No. 1.
The RM of Hastings No. 66 was originally incorporated as a rural municipality on December 13, 1909.[3] Its name was changed to the RM of Griffin No. 66 on January 30, 1910.[4]
The following unincorporated communities are within the RM.
In the 2021 Census of Population conducted by Statistics Canada, the RM of Griffin No. 66 had a population of living in of its total private dwellings, a change of from its 2016 population of . With a land area of 801.27km2, it had a population density of in 2021.[5]
In the 2016 Census of Population, the RM of Griffin No. 66 recorded a population of living in of its total private dwellings, a change from its 2011 population of . With a land area of 816.59km2, it had a population density of in 2016.[6]
The RM of Griffin No. 66 is governed by an elected municipal council and an appointed administrator that meets on the second Tuesday of every month.[1] The reeve of the RM is Stacey Lund while its administrator is Tawnya Moore.[1] The RM's office is located in Griffin.[1]