The broad definition of 'Shingi Shingon sect' includes Shingi Shingon sect which considers its Grand Head Temple as Grand Head Temple Negoro-ji Temple, Shingon sect Chisan school with its Head Temple at Chishakuin Temple, Shingon sect Buzan school with its Head Temple at Hasedera Temple, Shingon sect Muro-ji school with its Head Temple at Muro-ji Temple, but the narrow definition indicates the group, 'Shingi Shingon sect' which considers its Head Temple as Negoro-ji Temple.
また、広義では、総本山根来寺を総本山とする新義真言宗、智積院を本山とする真言宗智山派、長谷寺を本山とする真言宗豊山派、室生寺を本山とする真言宗室生寺派などを含むが、狭義では、根来寺を本山とする宗派である「新義真言宗」を指す。