The invention refers to a collapsible ski, wherein the front part (1) and the rear part (2) of such ski, when arranged in their linearly aligned position, are allowed to be fixed in such position by means of a platform (3), which is rotatable around an axis (200), which extends throughout a fold between said parts (1, 2) and is rectangular with respect to said sliding surface (95). Consequently, a ski is realized according to the invention, which is on the one hand due to practical storage and transporting, and on the other hand also due to simplification of technology for manufacturing of each particular component, when compared with manufacturing of classic single- part skis, without using any tools simply and in situ assembled of several mutually in a detachable manner connectable parts, and at the same time, such ski also provides a possibility of combining such separately manufactured and preferably standardized parts both in view of providing semi-products and finalizing each collapsible ski as such.