LDM, Ldm or LdM may stand for:

Businesses and organisations Laguna del Maule (LdM), is a lake located in the Andes of Central Chile Lorenzo de' Medici School (LdM), a private institution of higher education located in Florence, Italy Liberal Democrats (UK), a British political party

Computing Logical data model, a representation of an organization's data, organized in terms of entities and relationships Logical Disk Manager Local Data Manager LTSP Display Manager, an X display manager for Linux Terminal Server Project Latent diffusion model, in machine learning

Science Latitude dependent mantle, a widespread layer of ice-rich material on Mars Liquid-drop model of the atomic nucleus

Sport Left defensive midfielder, a position in association football Lucas Dumbrell Motorsport

Other uses Unit for loading meter, average height in a truck