Tha or THA may refer to:

• Temporary Housing Area
• Tetrahydroaminoacridine or Tacrine
• Texas Heartbeat Act
• Tha language, an Adamawa language of Nigeria
• Tha (Javanese) (ꦛ), a syllable
• Ṭha (Indic) a letter of Indic abugidas
• Tha (film), India
• Tha, a track by Aphex Twin on Selected Ambient Works 85–92
• THA, the IATA code for Tullahoma Regional Airport in the state of Tennessee, US
• THA, the ICAO code for Thai Airways International
• tha, the ISO 639-3 code for the Thai language
• THA, the National Rail code for Thatcham railway station in the county of Berkshire, UK
• Tobago House of Assembly, legislative body
• Total hip arthroplasty or hip replacement
• Transvaal Horse Artillery
• Troy Housing Authority, an agency of Troy, New York that subsidizes public housing

• All pages with titles containing THA
• All pages with titles beginning with THA

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