The web site below will help you determine if you need a VISA to visit Czech Republic.
If you need an invitation letter for VISA processing, please fill the form at https://goo.gl/forms/BKgcU3Ibsg5lt9qF3 after your registration. The firm deadline for requesting the invitation letter is 10 May 2018. Your requests will be processed in a batch manner. Please note that you must register for the conference before requesting the invitation letter.