Can a Hindu enter in church?

Yes,

You can enter a church. But make sure you don’t not take the holy Eucharist as it is for Christians(Those who had their 1st holy communion; it is one among the seven Sacraments).

Unlike many temples which restrict non-Hindu’s from entering, Churches don’t have any restriction(even during prayers). So nothing to worry.

• Many churches don’t permit camera during sacraments/functions as it cause disturbance.
• Remove chapel(in India) that is the norm in most churches.
• There will be two rows, one is for men and the other for women(India). Most churches left side(of the main door) is for men.
• There are various denominations in Christianity and there is difference between them. Hence make sure you know the basics.
• If you don’t know there is no issue as many Hindu’s come to church(both to see and pray). If you visit pilgrim centers you can see many Hindu’s

Eg: Velankanni Pondicherry; St. Philomena's Church, Mysore; Church of St. Francis of Assisi, Goa.