The following is a list of NJSIAA conferences disbanded by the 2009 realignment, including temporary conferences resulting from the two-year realignment plan.
Bergen County Scholastic League (annexed into Big North and North Jersey in 2010)
Bergen-Passaic Scholastic League (annexed into North Jersey in 2010)
Colonial Hills Conference (annexed into Northwest Jersey and Super Essex in 2009)
Iron Hills Conference (annexed by Northwest Jersey, Super Essex, and Union County in 2009)
Mountain Valley Conference (annexed into Super Essex and Union County in 2009)
North Bergen Interscholastic Athletic League (annexed into Big North in 2010)
North Jersey Tri-County Conference (2009-10 only, annexed into Big North and revived Hudson County in 2010)
Northern Hills Conference (annexed by North Jersey Tri-County and Super Essex in 2009)
Northern New Jersey Interscholastic League (annexed into North Jersey Tri-County and Super Essex in 2009)
Sussex County Interscholastic League (annexed into Northwest Jersey in 2009)
Watchung Conference (annexed by North Jersey Tri-County, Super Essex, and Union County in 2009)
