Njanji Soenji (Republican Spelling: Njanji Sunji; Perfected Spelling: Nyanyi Sunyi; Indonesian for "Songs of Solitude" or "Songs of Silence") is a 1937 poetry collection by Amir Hamzah. Written some time after the poet was forced to marry the daughter of the Sultan of Langkat instead of his chosen love in Java, this collection consists of 24 titled poems and pieces of lyrical prose, none of which are dated. First published in the magazine Poedjangga Baroe, the collection has been republished as a stand-alone book several times.