TLI
# TLI

TLI may refer to:

* Thallium(I) iodide, a Thallium compound
* Transport Layer Interface, a networking application programming interface.
* Trans-lunar injection, a propulsive maneuver used to set a spacecraft on a trajectory which will arrive at the Moon.
* Tseng Laboratories, Inc., the full corporate name of Tseng Labs
* Tall Latte index, an economic index based on the cost of a cup of Starbucks coffee
* Taipei Language Institute, an institute for teaching Mandarin Chinese founded in 1956
* The Lonely Island, an American comedy troupe
* The Living Infinite
* Trophic level index, an index used in New Zealand for measuring the nutrient content of a lake
* Term Life Insurance
* Temporal light interference, undesired degradation or malfunction of an equipment or system caused by light modulations
