LMA may refer to:
- Ladies Memorial Association, Southern local organizations dedicated to the Confederate dead
- Laryngeal mask airway, a mask used in anaesthesia and emergency medicine
- League Managers Association, an organization representing managers of English football clubs
- LMA Manager series, a series of video games endorsed by this organization
- LMA Manager of the Year, an annual award given to a manager from any division
- Lebanese Moslems Association, Sydney, Australia
- Levenberg–Marquardt algorithm, a mathematical procedure
- Ligue de Martinique d'Athlétisme, the governing body for the sport of athletics in Martinique
- Live Music Archive, a subsection of the Internet Archive
- Loan Market Association, a UK-based organization formed to support the secondary loan market in Europe
- Local marketing agreement, an agreement whereby a company operates a media station owned by a different licensee
- London Metropolitan Archives, the main depository for archives pertaining to Greater London
- Longwood Medical and Academic Area, in Boston, Massachusetts