Born in Moutier, he earned his diploma from the Beaux-Arts in 1964. Allemann worked as a graphic designer in Switzerland, then spent a sabbatical year in the Middle East, where he filled numerous sketchbooks with drawings.

He then settled in Italy, where he worked in advertising for four years. Back in Switzerland, he married Jacqueline Tabet, whom he had met in Milan, and the couple settled in Basel for four years.

Allemann was then hired as head of advertising at Nestlé Switzerland in Vevey. The family grew with the arrival of their son Philippe, and they lived in Corseaux/VD.

Painting has always been part of Allemann's life, and in 2005 he became a member of the Atelier de la Cour Matti. Between 1977 and today, he has held 45 exhibitions in Switzerland, Italy, and Germany.

After his "Urban Reflections," John Allemann turned his attention to "Human Reflections." The approach stems from the difficulty of finding a path toward an opening of dignity and freedom. The human soul is at the center of his concern, with its doubts and its search for transcendence.

In his works, most often abstract, the artist strives for a certain verticality, questioning, among other things, human destiny. John Allemann draws us into a more inward-looking world, with collages on paper using acrylic, India ink, pastel, or charcoal.

Today, more than 600 collages, ranging in size from 30x40 to 70x100cm, have been created.