| Little Allen Lake | |
| Other Name: | French: petit lac Allen |
| Location: | Haliburton County, Ontario |
| Coordinates: | [1] |
| Type: | lake |
| Part Of: | Ottawa River drainage basin |
| Outflow: | Allen Creek |
| Basin Countries: | Canada |
| Area: | 12.6ha |
| Elevation: | [2] |
| Pushpin Map: | Canada Southern Ontario |
| Pushpin Map Alt: | Map of Southern Ontario with location of Little Allen Lake shown with a dot |
| Pushpin Map Caption: | Location in Southern Ontario |
Little Allen Lake (fr|petit lac Allen) is a lake in the municipality of Dysart et al, Haliburton County in Central Ontario, Canada.[3] [4] [5] [6] It is the source of Allen Creek and is in the Ottawa River drainage basin.
Little Allan Lake has an area of 12.6ha and lies at an elevation of . It is long and wide. The lake is at the height of land between the Ottawa River drainage basin to the north and east, and the Trent River drainage basin to the west and south. The nearest named community is Pusey, to the south and just over the border into the neighbouring municipality of Highlands East.
The lake has no inflows. The primary outflow, at the northern end of the lake, is Allen Creek, which flows via Benoir Lake, the York River and the Madawaska River to the Ottawa River.