The Foster baronetcy, of Bloomsbury in the County of London, was created in the Baronetage of the United Kingdom on 5 February 1930 for the university administrator and educationalist Gregory Foster. He was provost of University College London between 1907 and 1929 and vice-chancellor of the University of London between 1928 and 1930.
The heir apparent to the baronetcy is Thomas James Gregory Foster (born 1991), son of the 4th Baronet.