PTB may refer to:
== Government and politics == Bermuda Public Transportation Board Bessarabian Peasants' Party (), a political party in the Kingdom of Romania Brazilian Labour Party (1945) (), dismantled after the 1964 military-led coup d'état Brazilian Labour Party (1981) (), merged with Patriota to form the new Democratic Renewal Party in 2022. Pakistan Tobacco Board Party of Labour of Burkina (), a political party in Burkina Faso Physikalisch-Technische Bundesanstalt, the national metrology institute of Germany Workers' Party of Belgium (), a Belgian political party
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).