Starting a business in Dubai involves a streamlined process, but it's essential to prepare all necessary documentation to ensure a smooth registration. The documents required may vary slightly depending on the type of business, location (Mainland, Free Zone, or Offshore), and legal structure, but the core requirements typically include:

1. Business Plan – Outlining business activities, financial forecasts, and goals.
   
2. Passport Copies – Valid passports of all shareholders, directors, and managers.
   
3. Visa and Emirates ID – Copies of UAE residency visa and Emirates ID, if applicable.
   
4. No Objection Certificate (NOC) – Required from the current sponsor if the applicant is on an existing UAE visa.
   
5. Memorandum of Association (MoA) – Legal agreement between shareholders detailing ownership structure and responsibilities.
   
6. Trade Name Reservation Certificate – Approval of the proposed business name from the Department of Economic Development (DED).
   
7. Initial Approval Certificate – A preliminary go-ahead from DED or the respective Free Zone authority.
   
8. Tenancy Contract – A registered office lease agreement or Ejari for Mainland businesses.
   

Ensuring all these documents are correctly prepared and submitted will facilitate a quick and efficient process of company registration in Dubai. Consulting with a local business setup consultant can also help avoid delays or errors.