Yes, Marwaris do celebrate Dussehra festival. Dussehra, also known as Vijayadashami, is a major Hindu festival celebrated across India. It symbolizes the victory of good over evil, and is marked by various rituals and traditions including the burning of effigies of the demon king Ravana. Marwaris, who are a business community from the region of Marwar in Rajasthan, actively participate in the festivities and observe Dussehra with great enthusiasm.