Primary Application Forms for a US Passport 1. Application For A US Passport (DS-11) 2.Here are some tips from a Passport Acceptance Agent on how to fill out the DS-11 application, which is the basic passport form. It is very important that the application is filled out and time is taken to write legibly. The application must be filled out in BLACK ink only or typed. When you apply for a passport, you should submit evidence of US citizenship. If you cannot get evidence, you may request a file search. Application You will need Form DS11.