- 北极熊 běijíxióng polar bear
- 北极光 běijíguāng northern lightsthe natural light display in the Earth's sky, predominantly seen in high-latitude regions around the Arctic
- 北极星 Běijíxīng Polaristhe North Star, the brightest star in the constellation Ursa Minor, used for navigation due to its position near the north celestial pole
- 北极圈 Běijíquān Arctic Circlethe Arctic Circle
- 南北极 nánběijí polesthe north and south poles
- 北极狐 běijíhú arctic fox
- 北极鸥 běijí'ōu glaucous gull(bird species of China) glaucous gull (Larus hyperboreus)