| Named By: | Joseph Leidy in 1856 |
| Time Period: | Oligocene[1] |
| Location: | Canada, Sekatchewan. USA, California, Colorado, Idaho, Montana, Nebraska, Oregon, North Dakota, South Dakota, Washington, Wyoming |
| Size: | About 25 centimetres long |
| Diet: | Herbivore |
| Fossil(s): | Remains of probably a few hundred individuals |
| Classification: | | Chordata | Mammalia | Lagomorpha | Leporidae | Palaeolagus | |
| Also known as: | | Archaeolagus striatus | Palaeolagus agapetillus | Protolagus affinus | Tricium annae | Tricium avunculus | Tricium leporinum | |
Palaeolagus ('ancient hare') is an extinct genus of lagomorph. Palaeolagus lived in the Oligocene period which was about 33-23 million years ago. The earliest leporids described from the fossil record of North America and Asia date to the upper Eocene some 40 million years ago.