While Hamad International Airport (DOH) in Qatar does not have a formal "uniform" for transit passengers, it is located in a conservative Islamic country, and travelers are expected to dress with "cultural sensitivity." In 2026, the general guideline for both men and women is to ensure that shoulders and knees are covered when in public spaces, including the airport terminals. You should avoid wearing overly revealing clothing, such as short shorts, sleeveless tank tops, or shirts with offensive graphics. While western-style jeans and t-shirts are perfectly acceptable, swimwear or very tight athletic gear may be met with disapproval or a polite request from staff to cover up. If you are flying with Qatar Airways as a "staff traveler" or on a "buddy pass," the rules are much stricter, often requiring smart-casual attire (collared shirts and chinos) and explicitly banning flip-flops, crocs, or distressed denim.