Defunct New Jersey State Interscholastic Athletic Association conferences
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)