Other
- Above-knee amputation
- Amphibious cargo ship, from its United States Navy hull classification symbol prior to 1969
- AKA (security), Authentication and Key Agreement
- Aka (Burmese), pre-arranged sets of movement in the Burmese martial arts
- Aka (sailing)
- Atka Airport (FAA LID: AKA) of Atka, Alaska
- Alcoholic ketoacidosis
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