LMK may refer to:
Late Middle Korean, a period of the Korean language LMLK seal, seals used in Judah Limkheda railway station in Dahod, Gujarat, India Lippo Mall Kemang, a shopping mall in Jakarta, Indonesia "LMK" (song), by Kelela, 2017 Luftmeldekorpset, a unit of the Danish Home Guard (1934–2004) Lego Monkie Kid, an animated series (2020-present)