An apparatus for preventing rotation of a seat frame for a vehicle having the seat frame that includes an inner link portion and an outer link portion that may be provided with a height adjustment device to adjust a height of a seat and a rack gear link may include a height link, wherein one end portion of the height link may be pivotally connected to a set bracket and the other end portion thereof may be pivotally connected to a cushion side member, and a rotation prevention link provided on the inner link portion wherein one end portion of the rotation prevention link may be pivotally hinged to the height link and the other end portion thereof may be movably installed on the set bracket.