Cyl is a Polish-language surname. Notable people with the name include:
Cylons are a fictional artificially-intelligent "species" envisioned in the Battlestar Galactica science fiction series and related franchises.
Cyllene (1895–1925) was a British Thoroughbred racehorse and sire. In a racing career that lasted from 1897 until 1899, Cyllene won nine of his eleven starts, winning major races and being regarded as the best horse of his generation at two, three and four years of age.
Cylindromatosis (turban tumor syndrome), also known as CYLD, is a human gene.
Cyle Larin (born April 17, 1995) is a Canadian professional soccer player who plays as a forward for Orlando City in Major League Soccer and the Canadian national team.
A cylindrical coordinate system is a three-dimensional coordinate system that specifies point positions by the distance from a chosen reference axis, the direction from the axis relative to a chosen reference direction, and the distance from a chosen reference plane perpendicular to the axis.
Cylinder-head-sector, also known as CHS, is an early method for giving addresses to each physical block of data on a hard disk drive.
In its simplest form, a cylinder (from Greek κύλινδρος – kulindros, "roller, tumbler") is the surface formed by the points at a fixed distance from a given straight line called the axis of the cylinder.
Cylons are a fictional race of robots in the original Battlestar Galactica TV series. They are the primary antagonists of the series and are at war with the Twelve Colonies of humanity.
Cylindrospermopsin (abbreviated to CYN, or CYL) is a cyanotoxin produced by a variety of freshwater cyanobacteria.