- local system
- local Tate duality
- local temperature
- local testing of Walsh-Hadamard code
- local theorem
- local theory
- local thermal equilibrium
- local thermodynamic equilibrium
- local time
- local time, LT
- local time rate of change
- local to global principle
- local tomography
- local topological group
- local topological subgroup
- local topology
- local Torelli problem
- local Torelli theorem
- local toxicity study
- local transformation
- local transformation group
- local triviality
- local trivialization chart
- local true time
- local truncation error