Gonzaga College moderator is held by a Jesuit priest. The role of the Moderator in the educational structure of the college is not merely the Deputy Principal of Student Affairs, but rather as a friend and spiritual guide for students to shape themselves into human beings for others: men and women for others.

Gonzaga College Moderator Staff for the 2022/2023 school year are:

YB Dion Rikayakto, M.Pd.
sub Moderator Kelas XII
Johanes Saud Maruli, S.Pd.
sub Moderaor Kelas XI
Agustina Anie Puspitasari, S.S.
sub Moderator Kelas X
P. Hari Prasetyo, S.Si., M.Pd.
Pembina Senat
Michael Bobby Christian, S.Pd.
Pembina Senat
Boima Turnip
Staf Administrasi Moderator