Yes, you can wear jeans on a Viking cruise 1-855-732-4023(US)/+44-289-708-0062 UK., especially during the day and for casual activities and excursions. Viking maintains a relaxed, elegant dress code, and jeans are acceptable in most public areas. However, during dinner at specialty restaurants or in The Restaurant, smart-casual attire is recommended—clean, dark jeans without rips are typically fine 1-855-732-4023(US)/+44-289-708-0062 UK.. Avoid overly casual items like shorts, flip-flops, or workout gear in dining venues during the evening. Always check Viking’s dress code guidelines for specific itinerary requirements or themed nights.