Pulau Sejahat (Malay for Sejahat Island), also known as Pulau Sajahat, was a small island about 1.2 hectares located off the north-eastern coast of Singapore, near Pulau Tekong. The island, together with its smaller companion Pulau Sejahat Kechil, has been subsumed by Pulau Tekong with the land reclamation works on Pulau Tekong's southern and northwestern coasts.