B1, B.I, B.1 or B-1 may refer to:

Biology and chemistry

  • Bradykinin receptor B1, a human protein
  • Cinnamtannin B1, a condensed tannin found in cinnamon
  • Combretastatin B-1, a stilbenoid found in Combretum sp.
  • Fumonisin B1, a toxins produced by several species of Fusarium molds
  • B-1 cell, a lymphocyte type
  • Arecatannin B1, a tannin found in the betel nut
  • Proanthocyanidin B1, a B type proanthocyanidin
  • Vitamin B<sub>1</sub>, also known as thiamine

Media

  • B1 TV, a Romanian TV channel
  • A class of FM radio broadcasting in North America

Roads

Vehicles

  • Rockwell B-1 Lancer, a United States Air Force strategic bomber
  • B1 (New York City bus) serving Brooklyn
  • B1 type submarine, a World War II Imperial Japanese Navy submarine class
  • Alsace-Lorraine B 1, an Alsace-Lorraine P 1 class steam locomotive
  • Marussia B1, a high-performance luxury sports coupé built by Russian automaker Marussia Motors
  • GS&WR Class B1, a Great Southern and Western Railway Irish steam locomotive
  • HMS B1, a B-class submarine of the Royal Navy
  • LB&SCR B1 class, an 1882 British express passenger steam locomotive
  • GCR Class 8C, classified B1 during LNER ownership, reclassified B18 in 1943
  • LNER Thompson Class B1, a British steam locomotive class
  • NER Class B1, a class of British steam locomotives
  • NCC Class B1, a Northern Counties Committee Irish steam locomotive
  • Pennsylvania Railroad class B1, an American electric locomotive
  • Saturn B-1, a 1959 four-stage rocket
  • USS B-1, a United States Navy B-class submarine
  • Brasilsat B1, a 1994 communication satellite
  • Char B1, a French heavy tank
  • B1 Centauro, an Italian wheeled tank destroyer
  • Boom XB-1 Baby Boom, an American technology demonstrator aircraft
  • Finnish Steam Locomotive Class B1

Other uses

  • B1 (file format)
  • B1 (classification), a medical-based Paralympic classification for blind sport
  • B-1/B-2 Visa, issued by the United States to a foreign citizen seeking to enter the United States of America for business purposes
  • A subclass of B-class stars
  • B1, an international standard paper size (707 × 1000&nbsp;mm), defined in ISO 216
  • A level in the Common European Framework of Reference for Languages
  • A security class in the TCSEC
  • the code for permission to use specific land or premises for offices, light industry in town and country planning in the United Kingdom
  • A sentient banana in the children's TV series Bananas in Pyjamas
  • B1, a model of battle droid in the Star Wars franchise
  • B1, Sydney Australia B-Line bus route
  • Chopin's Ballade No. 1
  • The darkest sky on the Bortle scale
  • Unitree B1, a robot dog made by Unitree Robotics

See also

  • B01 (disambiguation)
  • BI (disambiguation)
  • 1B (disambiguation)