1. LD - Noun
2. LD - Proper noun
LD
Abbreviation of Lakshadweep.
Initialism of laser disc.
Initialism of legislative district.
Initialism of lethal dose.
Initialism of Lib Dem.
Initialism of lunar distance.
(sports) Abbreviation of left defence/defense.: The left wing player defensive position
Source: en.wiktionary.org