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Blue Shield International
Blue Shield International (BSI) is the international arm of the Blue Shield, an NGO founded in 1996 by ICA, ICOM, ICOMOS, and IFLA to protect cultural heritage in armed conflict and disasters, named for the 1954 Hague Convention's blue shield emblem, with ICRC, UNESCO, and NATO partnerships.
Blue Square Alliance Against Hate
Blue Square Alliance Against Hate (BSA), formerly the Foundation to Combat Antisemitism, is Robert Kraft's 2019-founded 501(c)(3) nonprofit fighting antisemitism via the Blue Square symbol, Super Bowl ads, the Gillette Stadium Command Center, and the semiannual U.S. Antisemitism Landscape Survey.
Blue Star Optical Domain
蓝星光域, known in English as Laser Link or Blue Star Optical Domain, is a Shanghai startup founded in 2021 that builds laser communication terminals for satellites and airborne platforms.
Blue Torch Credit
Blue Torch Credit, also known as Blue Torch Capital, is a New York private credit firm founded by Kevin Genda in 2017, specializing in middle market special situations lending.
Blue wall of silence
Blue wall of silence, also called the blue code or code of silence: the informal police norm against reporting fellow officers' misconduct, documented from Westley's surveys to the Mollen Commission, with cross-national variation and reporting channels.
Blue Yonder
Blue Yonder, formerly JDA Software until its 2020 rebrand, is an American supply chain management software company in Scottsdale, Arizona, serving more than 3,000 retailers and manufacturers, and wholly owned by Japan's Panasonic Holdings since 2021.
Blue-collar worker
A blue-collar worker performs manual or technical labor, typically paid by the hour, in occupations such as construction, manufacturing, installation and repair, and transportation; the term dates to the 1920s.
Blue-water navy
Blue-water navy: a fleet capable of operating across open oceans and deep waters, distinct from green-water (coastal) and brown-water (riverine) forces; the US Navy is the leading example, with China and India building such capability.
BlueAnon
BlueAnon, a blend of blue and QAnon, is a term coined by conservatives for conspiracy theories attributed to liberals and Biden supporters, prominent from 2021 and peaking after the July 2024 Trump rally shooting.
Bluebeard
Bluebeard (La Barbe bleue), Perrault's 1697 fairy tale of a wife-murdering nobleman, ATU 312 Maiden Killer; forbidden chamber, blood-stained key, sister Anne, brothers' rescue, two moralités, and later retellings by Thackeray, Dickens, Brontë, and Atwood.
Bluebird Ventures
Bluebird Ventures is a venture capital firm in Palo Alto, California, founded in 2019 by Jeffrey W. Bird to invest in early-stage life sciences companies, with a $103.5 million fund.
Bluecore
Bluecore, formerly TriggerMail, Inc., is a New York retail marketing technology company founded in 2013 by Fayez Mohamood and serving over 400 brands before its 2026 acquisition by Insider One.
BlueCrest Capital Management
BlueCrest Capital Management is a British hedge fund founded in London in 2000 by Michael Platt and William Reeves, which returned all client money in 2015.
Bluecross Blueshield Venture Partners
BlueCross BlueShield Venture Partners is a Chicago-based healthcare venture capital platform managing the Blue Venture Funds, capitalized by Blue Cross Blue Shield plans and managed by Sandbox Industries.
Bluegogo
Bluegogo (小蓝单车) was a Chinese stationless bike-sharing startup launched in November 2016, which raised 400 million yuan and collapsed within a year, its bikes passing to Didi Chuxing in 2018.
Blueground
Blueground is a furnished-rental company founded in Athens in 2013 by Alex Chatzieleftheriou, now headquartered in New York City, that leases, furnishes, and sublets apartments for 30-day-plus stays.
Bluejay Therapeutics
Bluejay Therapeutics was a clinical-stage biopharmaceutical company founded by Keting Chu in Redwood City, California, in 2019, best known for the hepatitis delta antibody brelovitug and acquired by Mirum Pharmaceuticals in January 2026.
Bluelight (web forum)
Bluelight (Bluelight.org) is an international online harm-reduction community where people who use psychoactive drugs exchange safer-use information. It has run as a non-profit since 1999.
Bluepha (蓝晶微生物)
Bluepha (蓝晶微生物) is a Chinese synthetic-biology company founded in 2016 and headquartered in Shanghai, which produces PHA, a biodegradable and marine-degradable bioplastic, by microbial fermentation at its Yancheng plant.
Blueprint Equity
Blueprint Equity is a growth equity and venture capital firm in La Jolla, California, founded in 2018 by Sheldon Lewis and Bobby Ocampo to invest in enterprise software.
Bluerun Ventures (蓝驰创投)
Bluerun Ventures (蓝驰创投), also known as Lanchi Ventures, is a Beijing-based early-stage venture capital firm investing in Chinese technology start-ups through US dollar and renminbi funds.
Blues and Royals
The Blues and Royals (Royal Horse Guards and 1st Dragoons), formed 1969, is the British Army's second most senior regiment, part of the Household Cavalry, serving in armoured reconnaissance with Ajax and mounted ceremonial duty, wearing blue tunics with red plumes.
Bluesail Baisheng (蓝帆柏盛)
Bluesail Baisheng (蓝帆柏盛) is a Beijing-based cardiovascular device holding platform of Bluesail Medical, established in 2019, housing Biosensors International and raising RMB 1 billion in 2024.
Blueshirts
The Blueshirts, Irish members of the Army Comrades Association founded February 1932, were a pro-Treaty ex-servicemen movement under Eoin O'Duffy that adopted blue shirts in 1933, merged into Fine Gael, and split by 1935.
Bluespec
Bluespec is a high-level hardware description language built on guarded atomic actions (rules), whose compiler synthesizes designs into standard Verilog, with two interchangeable syntaxes, BSV and BH.
Bluestar Alliance
Bluestar Alliance is a New York-based brand management company, founded by Joey Gabbay and Ralph Gindi, that buys fashion brands and licenses them to manufacturers and retailers.
BlueYard
BlueYard Capital is a Berlin-based early-stage venture capital firm founded in 2016 by former Earlybird investors Ciarán O'Leary and Jason Whitmire, investing $500,000 to $5 million.
BLUF (communication)
BLUF (bottom line up front) is a military-origin communication principle stating the conclusion or recommendation first, codified in DA PAM 600-67 and Air Force Tongue and Quill guidance, parallel to journalism's inverted pyramid, now common in executive and business writing.
Blume Ventures
Blume Ventures is an India-focused early-stage venture capital firm founded in 2010 by Karthik Reddy and Sanjay Nath, investing in seed and pre-Series A technology startups with over $900 million under management.
Blundell's School
Blundell's School is an independent co-educational day and boarding school in Tiverton, Devon, founded in 1604 under the will of clothier Peter Blundell with a £20,000 bequest; it moved to its present site in 1882 and became fully co-educational in 1996.