Welti is a German surname: Albert Welti (1862–1912), Swiss painter and etcher Albert J. Welti (1894–1965), Swiss painter and writer Emil Welti (1825–1899), Swiss politician and father-in-law of Lydia Welti-Escher Émilie Jeanne-Sophie Welti, known as Sophie Hunger (born 1983), Swiss singer-songwriter Lydia Welti-Escher (1858–1891), Swiss patron of the arts and founder of the Gottfried Keller Stiftung