| Duffy | |
| Settlement Type: | Railway point |
| Pushpin Map: | Canada Southern Ontario |
| Pushpin Map Caption: | Location in Southern Ontario |
| Coordinates: | 45.0808°N -79.7092°W |
| Coordinates Footnotes: | [1] |
| Subdivision Type: | Country |
| Subdivision Name: | Canada |
| Subdivision Type1: | Province |
| Subdivision Name1: | Ontario |
| Subdivision Type2: | District |
| Subdivision Name2: | Muskoka |
| Subdivision Type3: | Municipality |
| Subdivision Name3: | Muskoka Lakes |
| Unit Pref: | Metric |
| Elevation Footnotes: | [2] |
| Elevation M: | 231 |
| Population Density Km2: | auto |
| Timezone1: | Eastern Time Zone |
| Utc Offset1: | -5 |
| Timezone1 Dst: | Eastern Time Zone |
| Utc Offset1 Dst: | -4 |
Duffy is a railway point and unincorporated place in geographic Medora Township in the municipality of Muskoka Lakes, District Municipality of Muskoka in Central Ontario, Canada.[3] [4] [5] [6] It is on the Canadian Pacific Railway main line between the railway point of Roderick to the south and the dispersed rural community of Mactier to the north. Duffy is on Haggart Creek, and adjacent to Cassady Lake (upstream) and Roderick Lake (downstream) on that creek.