A Pontifical High Mass, also called Solemn Pontifical Mass, is a Solemn or High Mass celebrated by a bishop using certain prescribed ceremonies. Although in modern English the word "pontifical" is almost exclusively associated with the pope, any bishop may be properly called a pontiff. Thus, the celebrant of a Pontifical High Mass may be the pope, any bishop or any other prelate who is allowed to wear pontificals.

Solemn Mass is the full ceremonial form of a Mass, predominantly associated with the Tridentine Mass where it is celebrated by a priest with a deacon and a subdeacon, requiring most of the parts of the Mass to be sung, and the use of incense. It is also called High Mass or Solemn High Mass.