Can I deduct a college loan that I pay but isn't under my name but instead my fathers?

Unfortunately, only the person who is legally obligated to pay the loan can deduct the interest. Please view the student loan interest deduction qualifications:

You can claim the student loan interest deduction if all of the following apply:

• You paid interest on a qualified student loan in tax year 2018;
• You can take the deduction as a student, or as a parent making payments on your dependent student’s loan. However, you or your spouse, if filing jointly, can't be claimed as dependents on someone else's return.
• You're legally obligated to pay interest on a qualified student loan;
• Your filing status isn't married filing separately; and
• Your MAGI is less than a specified amount, which is set annually.