LTL may refer to:

• Learning through Landscapes, a United Kingdom school grounds charity supporting outdoor spaces for play and learning
• Less than truckload, a freight industry term describing quantity
• Less than lethal, weapons intended to cause bodily injury instead of death
• Linear temporal logic, a field of mathematical logic
• Littleborough railway station, with National Rail station code "LTL"
• The ISO 4217 currency code for the Lithuanian litas, former currency of Lithuania
• Loyal Temperance Legion, Woman's Christian Temperance Union branch encouraging substance abuse avoidance