LTM

LTM may refer to:
 * LTM, IATA code for Lethem Airport, Guyana
 * LTM Recordings, British record label
 * Long-term memory, memory that can be stored as little as a few days or as long as decades
 * Leica thread-mount, an M39 screw lens mount introduced by Leitz Camera in the 1930s
 * Last Twelve Months, a financial term also known as trailing twelve months
 * Local Traffic Manager, a web networking term synonymous with the term "load balancer"
 * Logical Technology Model, term used in solution architecture to describe high-level hardware infrastructure
 * Lake of Two Mountains High School
 * Limited Time Mode in video games like Fortnite Battle Royale or Rocket League
 * London Transport Museum, Transport Museum in London, United Kingdom
 * ltm (gene), several lolitrem biosynthesis genes