Title : Longitudinal Spin Structure of the Nucleon: Present and Future Speaker: Marcin Stolarski, LIP, Portugal Abstract : I will review giving an overview of the present status of longitudinal spin structure of the nucleon. With an emphasis on results from quark flavor separation and gluon polarization. I will review the limitations of the current & near future measurements, and emphasize the need to pursue these investigations with a future Electron Ion Collider (EIC).