SLT may refer to:

Medicine

• Selective laser trabeculoplasty, an eye surgery
• Speech and language therapy

Technology

• Compaq SLT, a laptop computer line of the 1980s and 1990s
• Sony SLT camera, a 1990s digital camera type
• IBM Solid Logic Technology, a 1960s hybrid integrated circuit design
• Sri Lanka Telecom, a telephone company

Transportation

• Harriet Alexander Field, an airfield in Colorado, US (IATA code)
• Mercedes-Benz SLT-Class, a car model (built 1996–2020)
• South Lancs Travel, an English bus operator
• Sprinter Lighttrain, a Dutch electric train class (built 2007–2012)

Other uses

• Slovenian tolar, defunct currency
• Situational leadership theory, of organizations