This utility model disclosed a disposable orthopaedic foot splint preferably made of cellulous fibres particularly moulded pulp comprising a splint body and adjustable straps provided on predetermined locations on said splint body. The splint body is defined by a sole support section, a heel support section curving upwardly from the rear portion of said sole support section, an arcuated ankle support section vertically extending from said heel support section terminating to an enlarged arcuated leg support section. The adjustable straps include a foot strap provided on said sole support section and an ankle strap provided on said ankle support section. The splint body is provided with a plurality of vent holes arranged in a spaced manner on predetermined locations thereof, thus allowing air circulation to provide comfort and prevent irritation to the user.