| Union Bank ABA MARKET | Bank | 58 Azikiwe Rd, 58 | Aba | Thu 08:00–16:00 |
| Union Bank FACTORY ROAD ABA | Bank | Factory Rd | Aba | Mon–Fri 08:00–16:00 |
| Union Bank OGOJA | Bank | 1 Ogoja Rd, opp. Ebonyi Hotel | Abakaliki | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | Enugu-Ogoja Rd | Abakaliki | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | Plot B, Onikolobo Road, Ibara | Abeokuta | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 8 Ijigbo Street | Ado Ekiti | Thu 08:00–16:00 |
| Union Bank | Bank | Ado - Iworoko - Ifaki Rd | Ado Ekiti | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 9 Oba Adesida Road | Akure | — |
| Union Bank | Bank | Akure 340283, Ondo | Akure | Thu 08:00–16:00 |
| Union Bank Asaba Main | Bank | 119 Nnebisi Road | Asaba | Fri 08:00–16:00 |
| Union Bank | Bank | 318, 319 Nnebisi Road | Asaba | Fri 08:00–16:00 |
| Union Bank | Bank | 53X7+64G | Awka | Thu 08:00–16:30 |
| Union Bank MISSION ROAD BENIN | Bank | 5/7 Mission Rd | Benin City | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 7, Forestry Road, Iguobazuwa | Benin City | Mon 00:00–12:00, 23:00–00:00 |
| Union Bank | Bank | 8JRM+C43, Akpakpava Rd | Benin City | Thu 08:00–16:00 |
| Union Bank MARIAN | Bank | 20 Ndidem Iso Road | Calabar | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | Calabar Rd | Calabar | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 58 Zik Ave | Enugu | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | Airport Rd | Enugu | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 8VXH+8X7, Ogunmola St | Ibadan | Fri 08:00–16:00 |
| Union Bank UCH Branch | Bank | CW22+6C7, UCH Dr | Ibadan | Mon–Fri 08:00–16:00 |
| Union Bank NEW GBAGI MKT IBADAN | Bank | ILE, Bola Ige International Market, Old Ife Rd | Ibadan | Fri 08:00–16:00 |
| Union Bank | Bank | Iwo Road, Ibadan 200262, Oyo | Ibadan | Mon–Fri 08:00–16:30 |
| Union Bank Iremo road Ife | Bank | Adesoji Aderemi Rd | Ife | Fri 08:00–16:00 |
| Union Bank Ogba Ikeja | Bank | 4 Metalbox Rd | Ikeja | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 67 Murtala Mohammed Way | Ilorin | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | Fgfh+4Vm | Ilorin | Mon–Fri 08:00–16:00 |
| Union Bank | Savings bank | FHM7+QMM, Challenge Road | Ilorin | Mon–Fri 08:00–16:00 |
| Union Bank ILORIN UNIVERSITY | Bank | Saw Mill Area, 221 Umar Saro Road | Ilorin | Mon–Fri 08:00–16:00 |
| Union Bank JOS MAIN MARKET | Bank | 28 Rwang Pam St | Jos | Thu 08:00–16:00 |
| Union Bank BANK STR . JOS | Bank | 7 Bank St | Jos | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | Saminaka Road, Jengre | Jos | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 4, Major General Nnil Building, Mohamadu Buhari Way | Kaduna | Thu 08:00–16:00 |
| Union Bank | Bank | Bank Rd | Kano | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | Post Office Rd | Kano | Fri 08:00–16:00 |
| Union Bank | Bank | 18, Trading Area, Katsina Main Road | Katsina | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | Kauran Namoda/ Jibia Road, Jibia | Katsina | — |
| Union Bank | Bank | XJWC+JM4, Nagoggo Road | Katsina | Fri 08:00–16:00 |
| Union Bank | Bank | Yahaya Madaki Wy | Katsina | Mon–Fri 09:00–16:00 |
| Union Bank ADENIJI ADELE | Bank | 183b Adeniji Adele Rd | Lagos | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 21 Alakoro Marina St | Lagos | — |
| Union Bank | Bank | 21/22 Kakawa St | Lagos | — |
| Union Bank MOLONEY | Bank | 6 Moloney St | Lagos | Mon–Fri 08:00–16:00 |
| Union Bank | Savings bank | 97 Adeola Odeku St | Lagos | Mon–Fri 08:00–16:00 |
| Union Bank Plc | Savings bank | Fagba, 150 Iju Rd | Lagos | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | Independence House, Cable St | Lagos | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | Lokoja-Ankpa Rd | Lokoja | Thu 08:00–16:00 |
| Union Bank | Bank | 13, Kirikasama Road, Kirikasama | Maiduguri | Fri 08:00–15:00 |
| Union Bank | Bank | R4VW+66F, Sir Kashim Ibrahim Rd | Maiduguri | Mon–Fri 08:00–16:00 |
| Union Bank BANK ROAD, MAKURDI | Bank | opposite Ministry of Works | Makurdi | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 142 Bawa Paiko Rd | Minna | Fri 08:00–16:00 |
| Union Bank MINNA | Bank | JH52+X46, Yahaya Aminu Road | Minna | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 3RWR+Q47, Ondo - Akure Rd | Ondo | Fri 08:00–16:00 |
| Union Bank | Bank | 3 Atani Rd | Onitsha | Thu 08:00–16:00 |
| Union Bank NIGER BRIDGE HEAD | Bank | 41 Uga Street | Onitsha | Mon–Fri 08:00–16:00 |
| Union Bank for Africa | Bank | Osogbo 230103, Osun | Osogbo | Mon–Fri 08:00–16:00 |
| Union Bank OSOGBO | Bank | QG9R+C53, Gbongan Rd | Osogbo | Fri 08:00–16:00 |
| Union Bank OTTA | Bank | 75 Idi-Iroko, Express Road | Ota | Thu 08:00–16:00 |
| Union Bank | Bank | 23 Port Harcourt Rd | Owerri | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 170 D Aba Rd | Port Harcourt | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | Kingsway Road, 12 Azikiwe Rd | Port Harcourt | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 6 Warri - Sapele Rd, Warri Main Road | Warri | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 60 Airport Road | Warri | Mon–Fri 08:00–16:00 |
| Union Bank ENERHEN JUNCTION | Bank | By Wado City, 35 Enerhen Junction, Warri - Sapele Rd | Warri | Mon–Fri 08:00–16:00 |
| Union Bank | Bank | 70, Mbiama/ Yenagoa Road, Ovom | Yenagoa | — |