The British International School of Boston (formerly known as the British School of Boston) is a non-sectarian, co-educational college preparatory day school located in the Moss Hill section of the Jamaica Plain neighborhood in Boston, MA. BISB offers education for ages 3 to 18 (UK Nursery to Year 13/US Pre-K to Grade 12). The school opened in September 2000 and was the third school opened in the United States by the British Schools of America. Today, BISB is part of Nord Anglia Education, a provider of international schools with the headquarters in Hong Kong that was acquired by the Canada Pension Plan Investment Board and Baring Private Equity Asia in 2017. Roughly 63% of the total student body of all Nord Anglia Education schools combined are from expat families. The remaining 37% of the student body come from local families. One in three Nord Anglia graduates in 2015 was accepted to one of the top 100 universities in the world as ranked by the QS World University Rankings.

The British International School of Boston relocated in 2004 from Dedham, Massachusetts to its current location Showa Boston campus in the Moss Hill section of Jamaica Plain, Massachusetts, a satellite campus for Showa Women's University in Tokyo, Japan.