Donna Loos (born May 6, 1993 in the Netherlands) is a Dutch fashion model. Her twin sister, Gwen Loos, is also a professional fashion model. At the age of 13 both sisters were discovered while shopping in Amsterdam. They booked their first shoot, a shoot for the Dutch Avantgarde, together.

She walked the runway for Vera Wang, Jill Stuart and Erdem, among others. She also appeared in magazines such as Glamour UK, the French Cosmopolitan, Vogue Turkey and Vogue US.

She's currently signed with Wilma Wakker Model Management in Amsterdam, DNA in New York, Why Not in Milan and Viva Models in Paris, and London.