TWR

TWR may mean:

• Tom Walkinshaw Racing, a racing team founded in 1976
• Trans World Radio, a multinational Christian evangelistic broadcaster
• Traveling wave reactor, a type of nuclear reactor that would convert fertile material into fissile fuel
• The Weekly Reader, an American weekly educational classroom magazine designed for children in grades Pre-K–12
• Tokyo Waterfront Area Rapid Transit, the operator of the Rinkai railway line in Tokyo, Japan
• Thrust-to-weight ratio, a dimensionless indicator of the performance of an engine or vehicle
• Time weighted return, a specific rate of return calculation method