I am a co-signor on a student loan for my son, whom I am claiming as a dependent. My name does not appear on the 1098-e form. Can I still deduct the interest I paid?

Yes, you can deduct the student loan interest because your son is your dependent, you paid the interest,  and you are a co-signor/guarantor for the loan.

In TurboTax, you will need to indicate that the loan was in your name (this is true because you are a co-signor), then enter the Lender name and the Box 1 interest paid.