No, current EU pet passports issued in both NI and GB up to 31 December 2020, will not be valid for travel to the EU (including NI) after the 31 December 2020.  Interim measures have been put in place.  If you are travelling in early 2021, you should contact your vet who will arrange to update your pet passport appropriately to allow travel.  A new style UK (NI) branded EU Pet Passport will be available shortly and these will be distributed to veterinary practices in due course. A list of veterinary practice contacts can be accessed at the following link:-