Yes, you may, via the License Manager.
The License Manager is accessible here. To gain access, you need to have at least one license code registered to your email address.
Once you're in the License Manager, click "Gift" under the license code you'd like transferred, then follow the instructions presented and enter the recipient's email address. When you're done, click "Submit" to perform the transfer.
All transfers performed are final and cannot be undone. Do note that only non-active license codes may be gifted. Instructions on how to deactivate a license code may be found here.