The Brandenburg Euthanasia Centre (German: NS-Tötungsanstalt Brandenburg), officially known as the Brandenburg an der Havel State Welfare Institute (Landes-Pflegeanstalt Brandenburg a. H.), was a killing centre established in 1939 as part of the Nazi euthanasia programme, known after the war as "Aktion T4". Nearly 10,000 people were murdered there during its operation, primarily those with mental and physical disabilities.