| Lake Gardno | |
| Location: | Słowińskie Lakeland |
| Coords: | 54.6539°N 17.1122°W |
| Pushpin Map: | Poland#Poland Pomeranian Voivodeship |
| Basin Countries: | Poland |
| Length: | 6.8km (04.2miles) |
| Width: | 4.7km (02.9miles) |
| Area: | 24.69km2 |
| Max-Depth: | 2.6m (08.5feet) |
Gardno (German: Garder See) is a lake in the Słowińskie Lakeland in Pomeranian Voivodship, Poland. It is the part of Słowiński National Park. Its area is 24.69km2. It is 6.8 km long and 4.7 km wide. Maximum depth is 2.6 m.