A concealed sun visor includes a body having a receiving portion. The receiving portion includes two lateral grooves respectively extending transversely from two ends of a top edge and an open end opposite to the top edge. A holding and positioning mechanism includes a holding portion extending outward from an edge thereof. A light filter is mounted in the receiving portion and has an edge securely mounted in the holding portion. Two pressing members are disposed on two ends of the holding and positioning mechanism, respectively. The two ends of the holding and positioning mechanism are received in the two lateral grooves. Each pressing member is biased outward to press against a wall of a respective lateral groove to thereby provide a retaining force holding the light filter in the two lateral grooves. The light filter is movable between a storage position and an extended position for blocking light.