William Lidsheim (b. 2000, Stavanger) is a Norwegian painter based in Oslo. His practice centres on large-scale oil paintings developed without sketches or predefined motifs. Each work begins with simple structural marks on the canvas and unfolds through an open process of intuition, repetition, and adjustment.

Rather than constructed images, the paintings emerge through a process of continuous negotiation with the material. Working with a limited palette and layered technique, form and meaning develop through making rather than planning.

He often works on several paintings in parallel, allowing ideas and solutions to circulate between works. Viewed as a whole, the practice functions as an ongoing series in which each painting contributes to a broader exploration of process, variation, and time.