Khatijah Sidek (1918–1982) or Che Khadijah Mohd Sidik was a Malay nationalist and politician during colonial Malaya and the elected leader of the Kaum Ibu (literally meaning “mother’s group”; the section name was later changed to Wanita UMNO) in 1954. She was a key figure in the early history of the United Malay National Organisation (UMNO) and a vocal campaigner of women’s rights and the education of girls.