Haec dies quam fecit Dominus

Haec dies quam fecit Dominus, or This is the day which the Lord hath made, may refer to:

Haec dies

 * verse 24 of Psalm 118, from which comes a gradual associated with Easter
 * three compositions by Giovanni Pierluigi da Palestrina
 * two compositions by Jan Dismas Zelenka
 * a composition perhaps by Nicolas Bernier
 * a composition by Otto Albert Tichý
 * a composition by Johann David Heinichen
 * a composition by John Ensdale in the Gyffard partbooks
 * a composition by Marc-Antoine Charpentier
 * a composition by William Byrd
 * a track on the 1976 Gregorian chant album Paschale Mysterium
 * part of Credo by Penderecki

This is the day that the Lord hath made

 * "This is the day that the Lord hath made", a song by John W. Peterson
 * This is the day which the Lord hath made (Handel) or Wedding anthem for Princess Anne