If individuals wish to extend their stay in Turkey beyond the validity of their current visa, they can apply for a visa extension. The process of Extend Turkey Visa online involves submitting an application to the local immigration authorities before the current visa expires. Supporting documents, such as a valid passport, proof of accommodation, and financial means, may be required during the application process. The extension request is reviewed, and if approved, the applicants will be granted an extended period to legally stay in Turkey.