Christian marriage law in India is governed by the Indian Christian Marriage Act, 1872. This act applies to all Christians in India, including Roman Catholics, Protestants, Syrian Christians, and other denominations.

Under this act, a Christian marriage can be solemnized by a clergyman of the church or by a marriage registrar. The couple getting married must give notice of their intention to marry to the clergyman or registrar at least one month before the date of the marriage.

The act also specifies the minimum age for marriage, which is 18 years for the bride and 21 years for the groom. The act allows for marriages to be dissolved on grounds of adultery, cruelty, or desertion, among others.

In practice, Christian marriage law in India is influenced by the customs and traditions of the particular denomination or community to which the couple belongs. Some denominations require pre-marital counseling, while others may have specific requirements for the ceremony or the role of witnesses.

In addition to the Indian Christian Marriage Act, some states in India also have their own laws and regulations governing Christian marriage. For example, the state of Goa has its own Family Laws, which include provisions for Christian marriage and divorce.

Overall, Christian marriage law in India combines legal requirements with religious traditions and customs to create a unique and diverse set of practices that reflect the complex history and culture of Christianity in India.