Light Dark World 2025 (LDW’25) is the tenth meeting of the annual Light Dark World International Forum, which will take place between September 16 and September 19, 2025, at the Instituto de Física Teórica (IFT) in Madrid (Spain). The workshop will gather international specialists from both experimental and theoretical backgrounds in order to examine recent progress and create new avenues for investigating the existence of light particles beyond the Standard Model, including light gauge bosons, scalars, dark matter, axions, sterile neutrinos, and dark energy fields.