In Christianity, Holy Wednesday (also called Spy Wednesday, and in the Eastern and Oriental Orthodox Churches, Holy and Great Wednesday, Greek: Μεγάλη Τετάρτη, Megale Tetarte) is the Wednesday of the Holy Week, the week before Easter. It is followed by Maundy Thursday (Holy Thursday).

In Western Christianity, the Wednesday before Easter is sometimes known as "Spy Wednesday", as a reference to the betrayal of Jesus by Judas Iscariot.^[1][2], indicating that it is the day that Judas Iscariot first conspired with the Sanhedrin to betray Jesus for thirty silver coins.^[3][4]