Blackline

{{wiktionary}} '''Blackline''' or '''black line''' may refer to:

* Blackline (GPS company), best known for a car-tracking device that uses Global Positioning (GPS) * Northern line, a line on the London Underground * Blackline (software company), whose software offerings are Cloud-based accounting software * ''Black Lines'', a 2015 album by American rock band Mayday Parade * Document comparison or blacklining, a computer process to identify changes in a document * Linea nigra (''black line''), pigmentation on the abdomen, most often during pregnancy * Black Line, a cycling team in the British National Team Sprint Championships * Black Line, an 1830 offensive during the Black War between British colonists and Aboriginal Australians in Tasmania * Black line, pen and ink line work, a type of line art used to create tonal values in drawing

==See also== * Blackline rasbora (''Rasbora borapetensis''), a fish found in Asia * {{in title|Blackline}} * {{in title|Black line}} {{disambiguation}}