A professional username typically incorporates elements of your real name, industry, or expertise. It should be easy to read, memorable, and avoid numbers or special characters that may appear unprofessional. For example, ‘JohnSmithMarketing’ or ‘TechExpertAlex’ are more professional than ‘CoolDude123’ or ‘PartyAnimal_’. A professional username also maintains consistency across platforms, helping to build a cohesive online presence and personal brand.