PLA can refer to any of the following:

• It could be an initialism for the People's Liberation Army.
• It could be the Port of London Authority.
• It can be shorthand for a Programmable Logic Array.
• Surgeons use it to refer to a pelvic lymphadenectomy, a procedure in which lymph nodes are removed.
• As defined by the FTC, it is the manufactured fiber in which the fiber-forming substance is composed of at least 85% by weight of lactic acid ester units derived from naturally occurring sugars. Ingeo™ is one trademark for this fiber.
• It can refer to polylactide, a polymer trademarked as Natureworks ™, which can be extruded into Ingeo™ fiber.
• It can refer to polylactic acid .
• It's the stock symbol for Playboy Enterprises.
• It can be an initialism for Palestine Liberation Army
• It can refer to a Product licensing application which is an application to the Food and Drug Administration to get approval of a biologic product
• It can be an acronym for the computer and telephone hacking group Phone Losers of America
• It could be an initialism for the Pagan Liberation Army .