Oklahoma Fictitious Name Form is a document required by the Oklahoma Secretary of State in order to register a business name in the state. This form must be completed and submitted along with a filing fee to register a business as a sole proprietorship or partnership. There are three types of Oklahoma Fictitious Name Form: Application for Fictitious Name, Renewal of Fictitious Name, and Assumed Business Name. The Application for Fictitious Name is used to register a new business under a fictitious or assumed name. The Renewal of Fictitious Name is used to renew an existing fictitious or assumed name. The Assumed Business Name is used to register an assumed business name, which is the name under which a business operates, but is not the legal name of the business.