Baseline

A baseline is a line that is a base for measurement or for construction.

The word baseline may refer to:
 * Baseline (configuration management), the process of managing change in software or other fields
 * Baseline (sea), the starting point for delimiting a coastal state's maritime zones
 * Baselines of the Chinese territorial sea
 * Baselines of Indonesia
 * Baselines of the Philippines
 * Baseline, in underwater diving, a value used to convert cylinder pressure of a tank to free gas volume
 * Baseline (surveying), a line between two points of the Earth's surface and the direction and distance between them
 * Baseline (typography), the line upon which most letters "sit" and below which descenders extend
 * Baseline (budgeting), an estimate of budget expected during a fiscal year
 * Baseline (science), information found at the beginning of a study
 * Baseline (pharmacology), a person's state of mind or being, in the absence of drugs
 * The isoelectric line of an electrocardiogram
 * Baseline (interferometry), the length of an astronomical interferometer

The name Baseline may refer to:
 * Baseline (magazine), a magazine devoted to typography, book arts, graphic design
 * Baseline (database), a TV and movie industry database
 * Baselines (album), the 1983 debut album of composer Bill Laswell
 * Baseline Road (Arizona), a major east–west artery in Phoenix, Arizona
 * Baseline Road (Colorado), a major east–west artery in Boulder, Colorado
 * Baseline Road (Ottawa), a major east–west artery in Ottawa, Ontario
 * Baseline station, a transitway station in Ottawa
 * Base Line, Arkansas
 * Baseline Nunataks
 * Baseline Rock

It may also refer to:
 * The base line in baseball
 * The back line on a tennis court, and also a style of play in tennis; see tennis strategy
 * The back line on a pickleball court
 * The end line on a basketball court
 * A bassline in music
 * A shifting baseline in statistics
 * Baseline Killer, a serial killer who was active in the Phoenix metro area between August 2005 and June 2006