- Longdong Folk Custom Museum
- Longdong grottoes
- Longdong Yangge
- long drum of Yao nationality
- Long Duration Exposure Facility
- long-eared jerboa
- longer-lived
- longest-distance method
- longest increasing scattered
- longest increasing subsequence
- longest path
- longest prefix match
- longest remaining service time
- longest service time
- longevity
- longevity area
- longevity embroidery
- longevity level
- longevity research
- longevity risk
- long exact cohomology sequence
- long exact conomology sequence
- long exact homology sequence
- long exact sequence
- long exact sequence in K-theory