As you are looking for Zonal Office of Union Bank of India located in Kolkata, so I want to inform you that the Union Bank of India has its Regional Office in Kolkata.

Address of Regional Office
Sri Anurag Shrivastav
4, N. C. Dutta Sarani,
Kolkata 700 001
Tel.No. [033] 22100418
E-mail: crmcals@unitedbank.co.in

Shri K Sudhindra Raj
E. C. Market, Local Centre,
1st Floor, Salt Lake City,
Kolkata 700 064
Tel. No. [033] 2337-4189
E-mail : crmcaln@unitedbank.co.in

Other Regional Office of Union Bank of India in India

Sri P. P. Singh
J. C. Das Building
9/90, Block-P,
Connaught Circus,
New Delhi-110 001
Tel.No.[011] 2374-1565
E-mail: crmdelhi@unitedbank.co.in

Shri Vinod Babbar
Sir Pheroz Shah Mehta Road,
4th Floor, Mumbai 400 001
Tel. No. [022] 2282 4263
E-mail : crmmum@unitedbank.co.in

Shri R Elango
184/192, Sri Durga Towers,
R K Math Road,
Near Mandaveli Bus Terminus,
Mandaveli, Chennai - 600 028
Tamilnadu.
Tel.No. [044] 24642378
E-mail : crmsouth@unitedbank.co.in

Shri Raj Kishore Nayak
United Bank Bldg.
2nd Floor,Hem Barua Rd.
Panbazar,Guwahati-781 001
Tel. No. [0361] 2547499
E-mail : crmght@unitedbank.co.in