PTB

PTB may refer to:

Organizations

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

Science

• Patellar Tendon Bearing, a type of below-knee prosthetic socket that uses the patellar ligament as the primary weight-bearing surface
• Permian-Triassic boundary, the mass extinction event between the periods in geology
• N-phenacyl thiazolium bromide
• Phosphotyrosine-binding domain, usually denoted as PTB-domain
• Polypyrimidine-tract binding protein
• Pseudotachylitic breccias, rock composed of broken fragments of cohesive glassy or very fine-grained fault rock, see Pseudotachylite
• Pulmonary tuberculosis, manifestation of tuberculosis in the lungs

Other uses

• Packet Too Big, an ICMPv6 message
• The powers that be (disambiguation)
• Project team builder, a project management simulator
• Proto-Tibeto-Burman language
• P.T.B. (Placentia Town Ballers), the second album of the rapcore group Kingspade
• Push to break, electronics push switch
• Pounds of salt per thousand barrels of crude oil, see desalting of crude oil
• .PTB, a file extension used by musical tablature authoring tool, Power Tab Editor