| Triangle Lake Bog | |
| Alt Name: | Triangle Lake Bog State Nature Preserve |
| Map: | USA Ohio#USA |
| Location: | Portage County, Ohio |
| Nearest City: | Ravenna |
| Coordinates: | 41.1189°N -81.2561°W |
| Url: | http://naturepreserves.ohiodnr.gov/trianglelakebog |
Triangle Lake Bog or Triangle Lake Bog State Nature Preserve is a 61acres state nature preserve in the U.S. state of Ohio. It is located in Rootstown Township, south of Ravenna.
It is home to a number of plants including the round-leaved sundew, leatherleaf, highbush blueberry, large cranberry, poison sumac, sphagnum moss and catberry.