Trema

Trema may refer to:


 * a Greek and Latin root meaning hole
 * Trema, a term for the two dots (diacritic)
 * Tréma, (French), a diaeresis
 * Trema (plant), a genus of about 15 species of small evergreen trees
 * Tréma (record label), a French record label, now defunct
 * Trema, Croatia, a village near Sveti Ivan Žabno in central Croatia
 * a term coined by German neurologist Klaus Conrad in his 1958 monograph on schizophrenia