| Main Campus | Direct Line |
| Alumni & International Relations Office | 8814150 |
| Ateneo Child Learning Center-Main | 8814143 |
| Ateneo IELTS Review Center | 8814146 |
| Ateneo Social Science Research Center | 8814118 |
| Ateneo Teacher Training Center | 8814136 |
| Center for Community Development | 8814139 |
| Center for Culture & Arts | 8814124 |
| Center for Local Governance | 8814135 |
| Chaplaincy Office | 8814138 |
| College Admission & Aid Office | 8814119 |
| College Campus Ministry | 8814120 |
| College Guidance Office | 8814106 |
| College of Business and Accountancy | 8814126 |
| College of Computer Studies | 8814128 |
| College of Education | 8814132 |
| College of Humanities and Social Sciences | 8814127 |
| College of Law | 8814130 |
| College of Nursing | 8814133 |
| College of Science and Engineering | 8814129 |
| College Registrar’s Office | 8814125 |
| College Supreme Student Government | 8814142 |
| Graduate School | 8814131 |
| Human Resource and Management Office | 8814109 |
| Ignatian Legal Apostolate Office | 8814149 |
| Infirmary | 8814137 |
| Information and Communication Technology Center | 8814145 |
| Institute for Environmental Conservation & Research | 8814140 |
| Institutional Testing Center | 8814144 |
| Management Information System Office | 8814147 |
| Network Operations and Computer Services-Main Office | 8814108 |
| O’Brien Library (Main Campus) | 8814107 |
| Office of Administrative Services | 8814117 |
| Office of Communications and External Relations | 8814148 |
| Office of Mission and Identity | 8814104 |
| Office of Student Affairs | 8814122 |
| Physical Plant Administrator | 8814121 |
| President’s Office | 8814102 |
| Psychological Services Center | 8814110 |
| Purchasing and Asset Management Office | 8814111 |
| Senior High School Director’s Office | 8814134 |
| Treasurer’s Office (Disbursement Officer) | 8814116 |
| University Press | 8814112 |
| University Research Council | 8814113 |
| University Student Recruitment Office | 8814123 |
| VP for Higher Education | 8814105 |