To register a business name in Ireland, you'll need to follow these steps:

Business Name Search
Before you start the registration process, it's a good idea to check if the business name you want is available. You can do this through the Companies Registration Office's (CRO) website or by contacting them directly.

Business Structure
Determine the legal structure of your business. In Ireland, common business structures include sole proprietorship, partnership, limited company, or limited partnership.

Business Name Registration Form
You can register your business name online using the CRO's CORE (Companies Online Registration Environment) system. You'll need to complete Form RBN1, which is available on the CRO website.

Pay the Fee
There is a fee for registering a business name in Ireland, which can vary depending on how you choose to file the registration. The fees can change over time, so it's essential to check the CRO website for the most up-to-date fee information.