Yes, it is common for Harley-Davidson motorcycle riders to refer to themselves as "Harley owners" or "Harley riders." Given the strong brand loyalty and community associated with Harley-Davidson motorcycles, many riders take pride in owning and riding a Harley. They often identify themselves as part of the larger Harley-Davidson community and may use terms like "Harley owner" or "Harley rider" to describe themselves and their affiliation with the brand.