A safety seat for land vehicles, aircraft and watercraft, including a sitting portion secured to two vertical support straps attached to a vehicle and disposed in the vicinity of the rear edge of the sitting portion. Each support strap is a strap sling stretched between vertically spaced-apart anchors on the vehicle and includes a front strap facing the seating portion and a rear strap spaced therefrom. A transverse rod near the rear sitting portion edge reaches into the intermediate space between front and rear straps and is secured in closed fixed loops situated on the rear straps. The sitting portion is braced against the strap slings via supports pivotably connected to side rods of the sitting portion and extending at an angle below the sitting portion to the straps slings. The supports, via a transverse bracing disposed at their lower ends, reach into the intermediate space between front and rear straps. This transverse bracing is supported in loose loops on the rear straps that permit vertical movement of the transverse bracing.