The company said it will be seeking 40 voluntary redundancies as a result of the closures.
#8220;In line with the industry-agreed UK protocol on branch closures, we are writing to customers of these branches to inform them of alternative branch locations in their area and the range of banking services available on their mobiles, online, telephone and in post offices.
Ulster Bank is to close another 11 branches in Northern Ireland next year, reducing the total number left to 44.
The branches set to shut next summer are:
#8220;We are also communicating directly with staff in those affected branches.#8221;
Ulster Bank said it has made the decision because more of its customers are using digital services.
The Consumer Council has calculated that by the end 2017, the number of bank branches in Northern Ireland will have fallen by 38% compared to 2010.