William James Orsman (13 August 1838 - 4 January 1923) was a social and religious activist in the East End of London, nicknamed the "Archbishop of Hoxton".
At the age of 17 he joined the Commissariat, a civilian corps involved in the supply and transport of the British Army, and served in the Crimean War. He formed an acquaintance with Florence Nightingale while there. On his return to the UK he joined the Post Office, rising to be Supervisor of Mails. He retired from the position in 1880.
In 1861 he founded the Golden Lane and Hoxton Costers' Christian Mission. He was to spend the rest of his life devoting his spare time to the foundation.
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