KLS

KLS may stand for:


 * Kalash language (ISO 639 code: kls), a language of Pakistan
 * Key Largo School, a school in Florida, US
 * Khitan large script, an undeciphered Chinese script
 * KIIT Law School, Bhubaneswar, India
 * Sportswear brand of Kimora Lee Simmons
 * Kleine–Levin syndrome, a sleep disorder
 * Kobalt Label Services, a British record label
 * Kolss Cycling Team (UCI code: KLS), a Ukrainian cycling team
 * Košarkaška liga Srbije (Cyrillic: Кошаркашка лига Србије), the Basketball League of Serbia
 * Kuala Lumpur–Kuala Selangor Expressway, an expressway in Malaysia


 * Order of the Lion and the Sun (Knight of Lion and Sun), Iran
 * Southwest Washington Regional Airport, US, FAA/IATA airport code