Getting marry in Indonesia must meet age requirements as set-out by the prevailing laws and regulations. It is the age where the laws think that you have the capabilities in taking action on your behalf to tie the knot with someone. Performing the marriage legally, requires emotional maturity, and therefore such decision may not be able to be taken by a youngster. There are many prevailing laws about the minimum legal age for getting marry, but the Marriage Law is the most relevant one, and therefore shall be referred to for such cases.
The Marriage Law stipulates that the minimum age for getting marry is 16 (sixteen) years old for a woman, and 19 (nineteen) years for a man. If you are so young, performing the marriage shall requires the consent from their parents. You don't need any parental consent when you're 21 (twenty one) years old. If you're not old enough, you need to get either a consent from your parents, or get the court of law to approve your marriage.
We have also Civil Code that stipulates the minimum age for getting marry is 18 (eighteen) for a man, and 15 (fifteen) years of age for a woman. An approval from the President is required when you are younger. Special permission is usually granted under the circumstances such as pregnancy before performing the marriage.
The other prevailing laws governing minimum legal age to get marry is Islamic Law, and also customary law. But national law refer to the Marriage Law, and is applicable for Indonesian citizen, and all couples getting marry under the laws of the Republic of Indonesia, regardless your nationality.