LTB

LTB may refer to:


 * Landlord and Tenant Board, an Ontario tribunal for settling disputes between landlords and residential tenants
 * Latent tuberculosis, medical condition
 * Lateral-torsional buckling, mode of mechanical deformation
 * Leader Training Brigade, part of the US Army's basic training organization
 * Ligerz-Tessenberg-Bahn, a funicular in Switzerland
 * London Tourist Board, responsible for promotion of tourism in London
 * London Trained Bands, organized militia in London from 1559 to 1794
 * London Transport Board, responsible for public transport in London from 1963 to 1969
 * LTB dusts, solution to Einstein's field equations
 * Lymphotoxin beta, human protein
 * IATA code for Latrobe Airport, Tasmania, Australia. (Not to be confused with Latrobe Regional Airport (IATA: TGN) in Victoria, Australia.)