Before apllying for masters in US, If I get my name changed legally?
Your application should not be rejected on these grounds. Provide proof of your approved name change along with your application. Also, it might help if a couple of your references can include a short phrase in their letters such as, I am very pleased to write this letter to support Ms. Sushila Mohans application to the MS program in the University of XYZ; I knew her as Ms. Seema Rao when she was my student.