13.06.1903
foundation as Freispielclub 03 Neu-Isenburg
__.__.1913
merger with SC 05 Neu-Isenburg to FV 1903 Neu-Isenburg
__.__.1921
merger with FC Viktoria 05 to VfL Neu-Isenburg
__.__.1938
forced merger with SV 1911 Neu-Isenburg to SpVgg 03 Neu-Isenburg
__.__.1945
new foundation as SG Neu-Isenburg
__.__.1946
renaming in SpVgg 03 Neu-Isenburg