Lajja (Bengali: লজ্জা Lôjja) (Shame) is a novel in Bengali by Taslima Nasrin, a writer of Bangladesh. The word lajja/lôjja means "shame" in Bengali and many other Indic languages. The book was first published in 1993 in the Bengali language, and was subsequently banned in Bangladesh, and a few states of India. It nonetheless sold 50,000 copies in the six months after its publication, though Taslima fled her native Bangladesh after death threats from Islamic radicals.

Nasrin dedicated the book "to the people of the Indian subcontinent", beginning the text with the words, "let another name for religion be humanism." The novel is preceded by a preface and a chronology of events.

Lajja is a response of Taslima Nasrin to anti-Hindu riots which erupted in parts of Bangladesh, soon after the demolition of Babri Masjid in India on 6 December 1992. The book subtly indicates that communal feelings were on the rise, the Hindu minority of Bangladesh was not fairly treated, and secularism was under shadow.