LLT

LLT may refer to:
 * Laser lithotripsy, a surgical procedure to remove urinary stones
 * LLT GM High Feature engine, a type of engine
 * Lucas–Lehmer primality test for Mersenne numbers
 * Cholesky decomposition, an algorithm to decompose matrix A into a lower Matrix L : A = LLT.
 * Linus Media Group, a tech media group based in canada.