LKA may refer to:

• Gewayantana Airport (IATA: LKA), Indonesia
• Idalaka language of East Timor, ISO 639 code
• Lalit Kala Akademi, India's national academy of fine arts
• Landeskriminalamt (State Criminal Police), police agency of a German state
• Lane-Keeping Assist, a lane departure warning system which keeps vehicles in lane
• Lietuvos krepšinio asociacija, precursor to the Lithuanian Basketball League Lietuvos krepšinio lyga
• Lithuanian Space Association (Lietuvos Kosmoso Asociacija)
• A US Navy hull classification symbol: Amphibious cargo ship (LKA)
• LKA Longhorn, a music venue in Stuttgart, Germany
• Łódzka Kolej Aglomeracyjna or ŁKA (Łódź Metropolitan Railway), Poland
• Sri Lanka, ISO 3166-1 alpha-3 country code
• Switzerland women's ice hockey league (Leistungsklasse A)