No. Sikhs do not believe in child marriage. A Sikh has to be mature before considered to be of marriageable age.
The Sikhism code of conduct, a document titled Sikh Reht Maryada (SRM) forbids child marriage. Before marriage can be considered, SRM advises that a prospective bride or groom is to have reached the age of both emotional and physical maturity. Traditionally Sikh marriages have been arranged and this custom persists in modern times. A Sikh couple is married in the Anand Karaj wedding ceremony.
In historic times, marriages were arranged and child marriage took place in India as early as two, three, or four years of age. After marrying, the bride generally went to live with the groom and his family, which may well have included parents, grandparents, and uncles. However in Sikhism, matrimony generally was delayed until the onset of puberty. A bride commonly remained with her parents a year or two after being wed before joining her husband, until she was considered ready for childbearing.
The Sikh Guru's were married between the ages of 11 and 24, excepting Guru Har Krishan, the child guru who never married. Guru Gobind Singh married the earliest at age 11. By modern standards this may seem young, however by that time he had already been guru for the two years following his father's martyrdom at the hand of tyrannical Mughal rulers. Quite likely his mother sought support for her fatherless son through the alliance of marriage.
In modern times, marriage in Sikhism is often delayed until mid 20's or 30's, after higher education is completed and a couple is able to be financially stable. Though it is still common for the bride to live with the groom's family, the couple may live independently depending on circumstances.
