Joanna Catharina "Woinke" Deroover-Turcksin (3 June 1890 - 6 December 2002) was a Belgian supercentenarian whose age has been validated by the Gerontology Research Group. She was born and died in the province of Flemish Brabant. Having reached the age of 112, Joanna Deroover is the longevity recordholder of Belgium.