4X is a genre of computer strategy games.
4X may also refer to: Sogitec 4X, an audio processor created at IRCAM 4x CD-ROM drive, a speed of CD-ROM drive LG Optimus 4X HD, an Android smartphone NWFB Route 4X, a bus route in Hong Kong 4X, the production code for the 1977 Doctor Who serial Image of the Fendahl Quad scull or quadruple scull in rowing
See also XXXX (disambiguation) Forex, or Foreign exchange market Castlemaine XXXX, an Australian beer brand Four-cross, a style of mountain bike racing Fourcross, a style of four-wheel downhill racing X4 (disambiguation)