St Ann's Hospital is a mixed healthcare campus in South Tottenham in the London Borough of Haringey, England, and is the headquarters for Barnet, Enfield and Haringey Mental Health NHS Trust.

It also formerly housed the Haringey NHS primary care trust.

The Metropolitan Asylums Board purchased the site where St Ann's Hospital now stands in August 1892.

[2] The Metropolitan Asylum Board was liquidated in 1929 and the hospital came under the administration of London County Council in 1930.

[2] It came under the responsibility of Haringey Health Authority in 1982 and transferred to the management of Barnet, Enfield and Haringey Mental Health NHS Trust in 2001.