As you asking I am telling on following places Union Bank Of India has its branches in Chennai Tamilnadu:

Adayar
Alandur
Ambattur
Annanagar
Armenian Street Branch
Ashoknagar Chennai
Asset Recovery Branch Chennai
Audiyappan Naicken Street Chennai
Avadi
Balikhanda Puri
Besant Nagar
Chamiers Road Chennai
Chengalpattu
Chennai Cms
Chennai Ifb
Chennai Main
Chennai Overseas
Chennai Service Branch
Chidambaram
Chromepet
Cti Guindy
Davangere
Egmore Chennai
Fgmo Chennai
Guduvancheri
Hampankatta Mangalore
Kanakapura
Kathivakkam Ennore
Madhavaram
Madras Veterinary College Vepery
Maraimalai Nagar
Mid Corporate Branch Chennai
Mount Road Chennai
Mylapore Chennai
Nanganallur
Nayapalli
Nungambakkam Chennai
Pallavaram
Perungudi
Purasawalkam Chennai
R O Chennai
Rab Chennai
Ssi Tsk Branch
St Michael S Academy Adyar
T S Krishnanagar Branch
Thiruvanmiyur
Thyagaraja Nagar Chennai
Tiruvallur
Triplicane Chennai
Udupi
Union Loan Point Velachery Chennai
Vadapalani
Velachery
Villivakkam
Washermanpet Chennai
West Mambalam
West Tambaram

Ambattur branch

Bank :

Union Bank Of India

State :

Tamil Nadu

District :

Chennai

Branch :

Ambattur

IFSC Code :

UBIN0561223 (5th character is zero)

MICR Code :

600026052

Branch Code :

561223 (Last 6 Characters of the IFSC Code)

City :

Chennai

Address :

No 02 Pallam St Secretariat Colony Ambattur

Contact :

9962384903

For more info about Union Bank Of India branches I am giving process here:

Go to the Union Bank Of India official website

Click on branch & ATM locator which is under show button given at the right hand side

By click there you will move on branch locator page .