TCA

TCA may refer to:

In economics:

• True cost accounting

In education:

• The Classical Academy, Colorado Springs, US

In finance:

• Transaction cost analysis
• Total cost of acquisition

In chemistry:

• Trichloroacetic acid, chemical used to precipitate protein in serum
• 2,4,6-Trichloroanisole, cause of cork taint in wine
• Tricyclic antidepressant, a class of medications

In biochemistry:

• Toxin complex a, an insecticidal toxin complex produced by Photorhabdus luminescens bacteria
• Tricarboxylic acid cycle, an alternate name for the citric acid cycle pathway in cellular metabolism

In organizations:

• Taiwan Constitution Association, a political party in Taiwan
• Taiwanese Cultural Association
• Tekeyan Armenian Cultural Association, a network of Armenian cultural organisations
• Television Critics Association
• The Competition Authority (Ireland) (2002–2014)
• The Consulting Association
• Total Community Action
• Trans-Canada Air Lines, predecessor to Air Canada
• Train Collectors Association
• Transportes Carga Aérea, a defunct Brazilian airline
• Tribune Content Agency, a syndication company owned by Tribune Publishing
• Trinity Christian Academy (Deltona, Florida), US
• Trinity Christian Academy (Jackson, Tennessee), US

Other uses:

• Terminal Control Area, a volume of controlled airspace
• The Canadian Amateur, radio amateur magazine
• Topology change acknowledgement, a message in the 802.1D Spanning Tree Protocol (STP)
• Trade and Cooperation Agreement between the UK and the EU (2020)
• Traumatic cardiac arrest, due to trauma
• Triple Crown of Acting is a term used in the American entertainment industry to describe actors who have won a competitive Academy Award, Emmy Award, and Tony Award in the acting categories