| Keystone Bank | Bank | 24 Aba-Owerri Road, Aba, Abia State Abia NG | Aba | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | No. 88 Asa Road | Aba | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 36 Ogoja Rd | Abakaliki | Thu 08:00–16:00 |
| Keystone Bank | Bank | 65B Ibara, Omida | Abeokuta | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | Plot 22 Adetukunbo Ademola Crescent Wuse 2 (Abuja 5 Wuse 2 Federal Capital Territory NG | Abuja | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | Plot 556, Zone B5, Utako, Abuja, Fct Federal Capital Territory NG | Abuja | — |
| Keystone Bank | Bank | Plot No. 3256, IBB Way, Maitama | Abuja | — |
| Keystone Bank | Bank | Plot 3 New Iyin Rd - Ado Ekiti | Ado Ekiti | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 3 Dennis Osadebay Way | Asaba | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 441 Nnebisi Road Umuagu Delta NG | Asaba | Mon–Fri 08:00–04:00 |
| Keystone Bank | Bank | Benin City-Ehor Rd | Benin City | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 16 Murtala Mohammed Hwy | Calabar | Fri 08:00–16:00 |
| Keystone Bank | Bank | 23 Okpara Ave | Enugu | Fri 08:00–16:00 |
| Keystone Bank | Bank | KEYSTONE BANK, 128 Zik Ave | Enugu | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | Plot 7, Pocket Layout, Ebeano Est Rd | Enugu | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 22/23, New Market Rod Gombe | Gombe | Fri 08:00–16:00 |
| Keystone Bank | Bank | Plot E1/E2, Abeokuta Road Ibadan Oyo NG | Ibadan | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | Jehovah Shammah Plaza, 38 Ogba Rd, Ijaiye Rd | Ikeja | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 103 Ibrahim Taiwo Rd | Ilorin | Fri 08:00–16:00 |
| Keystone Bank | Bank | 5A Ahmadu Bello Way | Ilorin | Fri 08:00–16:00 |
| Keystone Bank | Bank | 25 Ahmadu Bello Way | Jos | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 14B Post Office Rd | Kano | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 31D Dala Road, Kofar Ruwa Dala | Kano | Fri 08:00–16:00 |
| Keystone Bank | Bank | 25A Nagogo Road | Katsina | Fri 08:00–16:00 |
| Keystone Bank | Bank | Wtc Road, Gra Katsina GRA Katsina NG | Katsina | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 52, Adeola Odeku Street, Victoria Island, Lagos Victoria Island Lagos NG | Lagos | — |
| Keystone Bank | Bank | Hall 3 Bba Plaza, Inter Trade Fair Complex, Lagos Lagos NG | Lagos | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | Kabba Rd | Lokoja | Thu 08:00–16:00 |
| Keystone Bank | Bank | 5 Baga Road | Maiduguri | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | Keystone Bank, 76 Iyorchia Road | Makurdi | Fri 08:00–16:00 |
| Keystone Bank Minna | Bank | KEYSTONE BANK, 1 Bosso Road | Minna | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 10, Port-Harcourt Road, Onitsha Port-Harcourt Road Anambra NG | Onitsha | Thu 08:00–16:00 |
| Keystone Bank | Bank | Klm 15 Onitsha State 430271 Onitsha Anambra NG, Enugu Rd | Onitsha | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | No 5 Ziks Avenue Awka Awka Anambra NG | Onitsha | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 53 Gbogan Road | Osogbo | Fri 08:00–16:00 |
| Keystone Bank | Bank | P62R+73M, Ota 112104 | Ota | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 117B Wetheral Road Owerri Imo NG | Owerri | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 20 Bank Rd | Owerri | Fri 08:00–16:00 |
| Keystone Bank | Bank | 5 Akanu Ibiam Rd | Umuahia | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 115 Ikot Ekpene - Uyo Rd | Uyo | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 39 Abak Rd | Uyo | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | University Of Uyo Town Campus State 520261 Uyo Akwa Ibom NG | Uyo | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 48 Sapele Rd | Warri | Mon–Fri 08:00–16:00 |
| Keystone Bank | Bank | 226 Mbiama-Yenagoa Rd Yenagoa Bayelsa NG | Yenagoa | — |