- L
- LYZ
- LEP
- LINC01271
- Ligase
- Lyase
- LFA
- LIF
- LALBA
- LAT
- LRG
- LRIG1
- LTBP
- LANCL2
- LYNX1
- LBX1
- LEF1
- Lipid transporter
- LZTS1
- LPS
- Lysostaphin
- LIG
- LSD1
- LTC4S
- Listeriolysin
- LtxA
- Luk
- LMP1
- LGALS1
- LGALS2
- LGALS3
- LGALS8
- LGALS9
- L1CAM
- LAG3
- LILR
- LecB
- LCP2
- LRP
- LMN
- LCN13
- LECT
- LTBP1
- LTBP3
- LTBP4
- LIMS1
- LAMP
- LRRC15
- LRRC32
- LRRN6A
- LYVE1
- LITAF
- LCA5
- LAP1
- LAP2
- LACTB
- LpxC
- Linamarase
- LIG3
- LIG4
- LARS
- LysRS
- LOX
- LPO
- LCAT
- LMWH
- LPAAT
- LpxA
- LpxD
- LTC4
- LTD4
- LTE4
- Lassa virus glycoprotein polyprotein
- LILRA2
- LILRA3
- LILRA4
- LTA
- LTB
- LAPTM4B
- LRP1
- LRP2
- LRP4
- LRP5
- LRP6
- LMNA
- LMNB1
- LECT2
- LPLUNC
- LYPD3
- LAMP1
- LAMP2
- Latrophilin receptor
- LGR5
- LEPR
- LAIR1
- LDLR
- LIN28A
- LIN28B
- LYRIC
- LASR
- LRRFIP1