L
- L / BPM — Bruce Proper Motion Survey (Luyten)
- Lac — Catalog of Nebulae of the Southern Sky (Lacaille)
- Lac I — Nebulae
- Lac II — Nebulous Star Clusters
- Lac III — Nebulous Stars
- LBN — Lynds' Catalogue of Bright Nebulae
- LDN — Lynds' Catalogue of Dark Nebulae
- LDS — Luyten Double Star catalogue
- LEDA — Lyon-Meudon Extragalactic Database
- LFT — Luyten Five-Tenths catalogue
- LHS — Luyten Half-Second catalogue
- LP — Luyten-Palomar Survey
- LPM — Luyten Proper-Motion Catalogue
- LS — either of two "Luminous Stars" catalogues; see LSN and LSS, below
- LSN — Luminous Stars in the Northern Milky Way
- LSPM — LSPM catalog - Lépine-Shara Proper Motion catalog
- LSR — Lepine-Shara-Rich catalogue
- LSS — Luminous Stars in the Southern Milky Way
- LTT — Luyten Two-Tenths catalogue
Read more about this topic: List Of Astronomical Catalogues