Keller is a common surname and can refer to various individuals and places. One notable figure is Helen Keller, an American author and activist who was deaf and blind. She became famous for her work in advocating for people with disabilities and for her inspirational life story. In addition to individuals, Keller can also refer to locations, such as Keller, Texas, a city in the United States. This suburban area is known for its family-friendly environment, parks, and community events, making it a popular place for residents in the Dallas-Fort Worth metroplex.