Walter Robert Loosli (born 29 July 1932) is a Swiss sculptor, woodcut engraver and maker of stained and painted glass panels and windows.Loosli was born in La Chaux-d'Abel, a part of Sonvilier in the canton of Bern, Switzerland. He trained first as a primary school teacher and therapist in Bern, but went on to further training in the School of Art (Kunstgewerbeschule) in Bern. He learned drawing with Hans Schwarzenbach and Max von Mühlenen.