Samuel Augustus Barnett was a Church of England cleric and social reformer who was particularly associated with the establishment of the first university settlement, Toynbee Hall, in east London in 1884. He is often referred to as Canon Barnett, having served as Canon of Westminster Abbey from 1906 until death.

Toynbee Hall is a charitable institution that works to address the causes and impacts of poverty in the East End of London and elsewhere. Established in 1884, it is based in Commercial Street, Spitalfields, and was the first university-affiliated institution of the worldwide settlement movement—a reformist social agenda that strove to get the rich and poor to live more closely together in an interdependent community. It was founded by Henrietta and Samuel Barnett in the economically depressed East End, and was named in memory of their friend and fellow reformer, Oxford historian Arnold Toynbee, who had died the previous year.