TBW may refer to:
Science and medicine Terabytes written, the number of terabytes that can be written to a solid-state drive within its warranty service Total body water, concept in physiology
Transport TBW, the IATA code of Tambov Donskoye Airport, Russia TBW, the National Rail station code of Tunbridge Wells railway station, Kent, England
Organisations Tampa Bay Water, American drinking water company
Other Boeing Truss-Braced Wing, a proposed airplane design with high aspect ratio wings "That Bloody Woman", derogatory nickname for Margaret Thatcher The Bridge World, American magazine about contract bridge That Bloody Woman, a 2015 New Zealand musical about Kate Sheppard and New Zealand women's suffrage That Bloody Woman, the title of a 2008 biography of welfare campaigner Emily Hobhouse