Yes, you can apply for a Schengen visa from Dubai without an invitation letter if your purpose is tourism, leisure, or a short holiday. In such cases, you’ll need to provide confirmed hotel bookings, return flight tickets, a detailed travel plan, and proof of financial means. An invitation letter becomes necessary if you are visiting family, friends, or attending business meetings. For business trips, companies in Europe typically issue an invitation, while family/friends provide a signed letter and supporting proof of relationship or accommodation. Matching your documents to your travel purpose is essential for approval.