Organizations
- Brazilian Labour Party, the name of two different political parties in the nation of Brazil
- Party of Labour of Burkina (Parti du Travail de Burkina), a political party in the African nation of Burkina Faso
- Physikalisch-Technische Bundesanstalt, the national standards laboratory of Germany
- Passaredo Transportes Aéreos, a Brazilian airline
- Portland Trail Blazers, a professional basketball team
- Workers Party of Belgium (Parti du Travail de Belgique)
- Placer Theatre Ballet, the ballet company for Placer County, California USA
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