Bo or BO may refer to
Alexander Boris de Pfeffel Johnson (; born 19 June 1964) is a British politician, writer, and former journalist who is the prime minister of the United Kingdom and leader of the Conservative Party since July 2019. He has been Member of Parliament (MP) for Uxbridge and South Ruislip since 2015 and was MP for Henley from 2001 to 2008. He also served as mayor of London from 2008 to 2016 and foreign secretary from 2016 to 2018. Johnson identifies as a one-nation conservative.
Bob Dylan (born Robert Allen Zimmerman; May 24, 1941) is an American singer-songwriter, author, and visual artist who has been a major figure in popular culture for more than fifty years.
Bosnia and Herzegovina, abbreviated BiH or B&H, sometimes called Bosnia–Herzegovina and often known informally as Bosnia, is a country in Southeastern Europe, located within the Balkan Peninsula.
Boba Fett () is a fictional character, a bounty hunter in the Star Wars franchise. In Episode V – The Empire Strikes Back (1980), he is hired by Darth Vader to capture Han Solo.
Botany, also called plant science(s), plant biology or phytology, is the science of plant life and a branch of biology.
Borderline personality disorder (BPD), also known as emotionally unstable personality disorder (EUPD), is a mental illness characterized by a long-term pattern of unstable relationships, a distorted sense of self, and strong emotional reactions.
Boxing is a combat sport in which two people, usually wearing protective gloves, throw punches at each other for a predetermined amount of time in a boxing ring.
Bonnie Elizabeth Parker (October 1, 1910 – May 23, 1934) and Clyde Chestnut Barrow (March 24, 1909 – May 23, 1934) were an American criminal couple who traveled the Central United States with their gang during the Great Depression, known for their bank robberies although they preferred to rob small stores or rural gas stations.