• direct current, a direct flow of electricity
• direct examination, the in-trial questioning of a witness by the party who has called him or her to testify
• direct route or "direct service", a route that does not divert to a third location
• direct sum of modules, a construction in abstract algebra which combines several vector spaces
• Direct (album), 1988 album by Vangelis
• DirectX, a proprietary dynamic media platform
• Mars Direct, a proposal for a manned mission to Mars
• DIRECT, a proposed Shuttle Derived Launch Vehicle

In computing:

• direct access, a method of accessing data in a database
• direct connect, various methods of telecommunications and computer networking
• direct memory access, access to memory by hardware subsystems independently of the CPU

In mathematics:

• directed set, in order theory
• direct limit of (pre)sheaves

See also

• direction
• director