Johanna Catharina Maria "Jolande" Sap (born 22 May 1963) is a former Dutch politician and former educator and civil servant. A member of GroenLinks (GL), she replaced Wijnand Duyvendak as a member of the House of Representatives on 3 September 2008, after his resignation. She had temporarily been replacing Mariko Peters from the previous day who was on parental leave. From 16 December 2010 to 5 October 2012 she was party leader as well as parliamentary leader in the House of Representatives, replacing Femke Halsema who announced her retirement from politics as of that date.