Joanna Senyszyn (Polish pronunciation: [j?'anna s?'n???n]; born 1 February 1949) is a Polish politician and professor of Economics.
Senyszyn is member of the left-wing party Democratic Left Alliance (SLD), which she was vice-president (2005–2008).
From 2001 to 2009 she was member of the Sejm until she was elected as member of the European Parliament (2009–2014).