At the Second Vatican Council in 1965, the Church declared its attitude to other religions in a document called Nostra Aetate (which means 'in our time'.) All quotations on this page come from that document. The Council Fathers declared as their fundamental principle, in her tasks of promoting unity and love among men, indeed among nations, [the Church] considers above all [ ] what people have in common and what draws them to fellowship. (n.1)also,

The Catholic Church rejects nothing that is true and holy in these religions. She regards with sincere reverence those ways of conduct and of life, those precepts and teachings which, though differing in many aspects from the ones she holds and sets forth, nonetheless often reflect a ray of that Truth which enlightens all men. (n.2)

Concerning the Jewish people,

As the Sacred Synod searches into the mystery of the Church, it remembers the bond that spiritually ties the people of the New Covenant to Abraham's stock. Thus the Church of Christ acknowledges that, according to God's saving design, the beginnings of her faith and her election are found already among the Patriarchs, Moses and the prophets. She professes that all who believe in Christ -- Abraham's sons according to faith -- are included in the same Patriarch's call, and likewise that the salvation of the Church is mysteriously foreshadowed by the chosen people's exodus from the land of bondage. The Church, therefore, cannot forget that she received the revelation of the Old Testament through the people with whom God in His inexpressible mercy concluded the Ancient Covenant. Nor can she forget that she draws sustenance from the root of that well-cultivated olive tree onto which have been grafted the wild shoots, the Gentiles. Indeed, the Church believes that by His cross Christ Our Peace reconciled Jews and Gentiles, making both one in Himself. (n.4)

Concerning Muslims,

The Church regards with esteem also the Muslims. They adore the one God, living and subsisting in Himself, merciful and all-powerful, the Creator of heaven and earth (5), who has spoken to men; they take pains to submit wholeheartedly to even His inscrutable decrees, just as Abraham, with whom the faith of Islam takes great pleasure in linking itself, submitted to God. Though they do not acknowledge Jesus as God, they revere Him as a prophet. They also honor Mary, His virgin mother; at times they even call on her with devotion. In addition, they await the day of judgement when God will render their deserts to all those who have been raised up from the dead. Finally, they value the moral life and worship God especially through prayer, almsgiving and fasting. Since in the course of centuries not a few quarrels and hostilities have arisen between Christians and Moslems, this Sacred Synod urges all to forget the past and to work sincerely for mutual understanding and to preserve as well as to promote together for the benefit of all mankind social justice and moral welfare, as well as peace and freedom. (n.3)

Concerning Hindus,

In Hinduism, men contemplate the divine mystery and express it through an inexhaustible abundance of myths and through searching philosophical inquiry. They seek freedom from the anguish of our human condition either through ascetical practices or profound meditation or a flight to God with love and trust. (n.2)

Concerning Buddhists,

Buddhism, in its various forms, realizes the radical insufficiency of this changeable world; it teaches a way by which men, in a devout and confident spirit, may be able either to acquire the state of perfect liberation, or attain, by their own efforts or through higher help, supreme illumination.

Finally, the Church condemns all forms of discrimination,

We cannot truly call on God, the Father of all, if we refuse to treat in a brotherly way any man, created as he is in the image of God. Man's relation to God the Father and his relation to men his brothers are so linked together that Scripture says: "He who does not love does not know God" (1 John 4, 8). No foundation therefore remains for any theory or practice that leads to discrimination between man and the man or people and people, so far as their human dignity and the rights flowing from it are concerned. The Church reproves, as foreign to the mind of Christ, any discrimination against men or harassment of them because of their race, color, condition of life, or religion. On the contrary, following in the footsteps of the holy Apostles Peter and Paul, this Sacred Synod ardently implores the Christian faithful to "maintain good fellowship among the nations" (1 Peter 2, 12), and, if possible to live for their part in peace with all men, so that they may truly be sons of the Father who is in heaven. (n.5)