UJohn Henry Steenhuisen, owaziwa njengoJohn Steenhuisen, usopoliti waseNingizimu Afrika osebenza njengomholi weqembu eliphikisayo kwiPhalamende Likazwelonke laseNingizimu Afrika. Ungumholi wesikhashana we-DA, okhethwe ngoNovemba 2019. Phambilini wayeyisitswebhu esikhulu se-DA kwiNational Assembly ngaphansi kobuholi bukaMmusi Maimane. Ubuye futhi wabandakanyeka kwezepolitiki yaKwaZulu-Natali, njengomholi wesifundazwe we-DA nekhansela likaMasipala weTheku. John Steenhuisen elected DA interim leader. Uvakashelwe ngomhlaka 12 Ephreli 2020.