Pannychis

Pannychis (παννυχίς, ), from Greek words πᾶν ('all, every') and νύξ ('night'), may refer to:


 * An all-night feast or ceremony of the ancient Eleusinian Mysteries
 * Pannychis, a courtesan given by the Jewish king Herod the Great to the king of Cappodocia as thanks for reconciling a Herod family dispute
 * Vigil, a period of purposeful sleeplessness, an occasion for devotional watching, or an observance
 * Panichida (панихида), the name for Memorial service (Orthodox) in Slavic languages