The Third Person of the Holy Trinity is called the Holy Spirit in most languages. In English, due to the use of the word 'spirit' to mean hard liquor, the Bishops changed the name to Holy Ghost. The prayers below use the name Holy Ghost.
INDULGENCED PRAYERS TO THE HOLY GHOST
Come, O Holy Ghost, fill the hearts of Thy faithful and kindle in them the fire of Thy love. (300 days, once a day).
Send forth Thy Spirit, and they shall be created, and Thou shalt renew the face of the earth.
Let us pray.
O God, who didst instruct the hearts of the faithful by the light of the Holy Ghost, grant us in the same Spirit to be truly wise and ever to rejoice in His consolation, through Jesus Christ our Lord. Amen.
O Holy Ghost, Divine Spirit of light and love, I consecrate to Thee my
understanding, heart, and will, my whole being for time and for eternity. May my understanding be always submissive to Thy heavenly inspirations, and to the teaching of the Catholic Church, of which Thou art the infallible Guide; may my heart be ever inflamed
with love of God and of my neighbour; may my will be ever conformed to the Divine Will, and may my whole life be a faithful imitation of the life and virtues of Our Lord and Saviour Jesus Christ, to Whom with the Father and Thee be honour and glory forever.
Amen. (Indulgence: 300 days, once a day).
O Holy Ghost,
Creator, be propitious to the Catholic Church; and by Thy heavenly power make it strong and secure against the attacks of its enemies; and review in charity and grace the spirit of Thy servants, whom Thou hast annointed, that they may glorify Thee and the
Father and His only-begotten Son, Jesus Christ, our Lord. Amen. (Indulgence: 300 days, once a day).
O Holy Ghost, spirit of Truth, come into our hearts; shed the brightness of Thy light on all nations, that they may be one in faith and pleasing to Thee. (Indulgence: 100 days, once a day).
Please note: these prayers have been verified by the Raccolta of 1910. They were composed by either Pope Pius IX, Pope Leo XIII, or Pope St. Pius X.