Whitlockska samskolan was a Swedish private secondary school in Östermalm, Stockholm. The school had its origin as a girls' school founded by the pedagogue and suffragette Anna Whitlock in 1878. In 1893, Whitlock and Ellen Key re-established the school as Stockholms nya samskola (New Co-educational School of Stockholm). The name Whitlockska samskolan was adopted in 1905. The school was closed in 1978.