TTL
# TTL

TTL may refer to:

## Photography

* Through-the-lens metering, a camera feature
* Zenit TTL, an SLR film camera named for its TTL metering capability

## Technology

* Time to live, a computer data lifespan-limiting mechanism
* Transistor–transistor logic, a family of integrated-circuit digital logic
   * Differential TTL, a serial signaling standard based on TTL
* Turtle (syntax), a computer data format used in semantic web technologies

## Other uses

* Taiwan Tobacco and Liquor, a state-owned manufacturer
* "TTL (Time to Love)", a single by South Korean girl group T-ara and boy band Supernova
