DWT may stand for:

• Discrete wavelet transform, a mathematical procedure in numerical analysis and functional analysis
• Driving While Texting, Is the act of composing, sending, or reading text messages, email, or making other similar use of the internet on a mobile device, while operating a motor vehicle, such as an automobile, truck or train.
• Dry weight
• D'Arcy Wentworth Thompson, a scholar
• Deadweight tons/tonnage, an expression of a ship's carrying capacity, including the weight of the crew, passengers, cargo, fuel, ballast, drinking water, and stores.
• Deep Web Technologies, a software company that specializes in mining the deep Web
• Detroit–Windsor Tunnel, a highway connecting Michigan with Ontario
• Drowned World Tour, a 2001 concert tour by American entertainer Madonna
• Davis Wright Tremaine, a national business and litigation law firm representing clients in the United States and in China.
• Dangerous World Tour, a 1992–93 concert tour by Michael Jackson
• Dorset Wildlife Trust, a wildlife trust covering the county of Dorset, United Kingdom
• Diamonds World Tour, a concert tour by Rihanna
• Dynamic Web TWAIN, a TWAIN-based scanning SDK software specifically designed for web applications
• Dangerous Woman Tour, a 2017 concert tour by Ariana Grande

dwt may refer to:

• Pennyweight, a unit of mass used in measuring the weight of gold

.dwt is a file extension used by several programs, including:

• Adobe Dreamweaver Template
• Dynamic Web Template, a Microsoft FrontPage feature
• AutoCAD Template/Prototype