Ullin as a personal name can refer to: Ullin, in Germanic paganism, the female counterpart of Ullr in the theorized fertility pair Ullr and Ullin; or referring to the form Ullinn found in placenames Ullin Place (1924–2000), British philosopher and psychologist Albert Ullin (1930–2018), German-Australian bookseller, founder of Australia's first children's bookstore
Ullin as a place name can refer to: Ullin, Illinois Glen Ullin, North Dakota Ullin, Alberta