Administration
| Rectors of the Immaculate Heart of Mary Seminary |
| Rev. Alphonse M. Mildner, SVD, 1950 - 1960 |
| Fr. Pelagio Dompor †, 1960–1972 |
| Fr. Fernandez †, 1972 - |
| Fr. Eustaquio Salera, |
| Fr. Juan de Dios M. Pueblos, |
| Fr. Zacarias C. Jimenez |
| Fr. Clarito "Boy" Rara, 1983–1984 |
| Msgr. Onesimo C. Gordoncillio, 1984 - 1985 |
| Fr. Alfredo Baquial †, 1985–1986 |
| Msgr. Cirilo Darunday, 1989 |
| Fr. Bernard Rañoa, |
| Fr. Avelino "Val" Vale, |
| Fr. Martin Lupiba, |
| Fr. Crisolito Geangan, |
- Rector - Fr. Ramon Oncog, JCL
- Procurator - Fr. Al John Miñoza
- Prefect of Discipline - Fr. Dennis Balakid
- Spiritual Director - Fr. Al John Miñoza
- Spiritual Director Pre-college - Rev. Msgr. Jesus B. Ligason
- Academic Dean College - Fr. Valentino Pinlac
- Prefect of Discipline Pre-College - Fr. Richard Calapan
- Registrar - Mr. Godofredo Hinacay
- Cashier - Mrs. Juliet Legaspi
- Prefect of Discipline High School Department - Fr. Armando Bayron
- Spiritual Director High School Department - Rev. Vengie Laguros
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