I have a 403B retirement account is this considered a traditional IRA?

[stackhouse-brend]

Can I get a deduction for paying into this?

[dmertz]

No, a 403(b) is not an IRA.  Enter amounts shown in box 12 of your W-2 only in box 12 of TurboTax's W-2 form, nowhere else in TurboTax.  Your employer has already reduced the amount in box 1 of your W-2 by the amount of your elective deferrals to the 403(b), so you don't get to deduct them again.