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 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 (medicine), 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 See also Baseline Road (disambiguation)