Portuguese may refer to:

• anything of, from, or related to the country and nation of Portugal
  • Portuguese cuisine, traditional foods
  • Portuguese language, a Romance language
    • Portuguese dialects, variants of the Portuguese language
  • Portuguese man o'' war, a dangerous marine cnidarian that resembles an 18th-century armed sailing ship
  • Portuguese mythology (also Lusitanian), traditional religion
  • Portuguese people, an ethnic group