Can anyone receive Communion at a Catholic funeral?

Anyone can technically receive Communion, but that is not the way it is supposed to work. You have to be a Catholic first of all, and before anyone receives Communion they are supposed to ask for forgiveness of their sins from God. Catholics believe that you have to ask for forgiveness as well as perform an assigned penance from a priest. Not many Catholics follow this tradition however. Only Catholics in the state of grace - that is, free of mortal sin on their conscience - may receive Communion at a Catholic funeral. Often, as mentioned above, attendees of the funeral feel compelled to go to Communion as an expression of social solidarity, however, reception of the sacrament is not an essential part of participation in a funeral Mass and Communion should not be approached if one is a non-Catholic, or conscious of mortal sin upon one's own soul. To receive while in mortal sin is to commit a grave sacrilege. If one is Catholic and wishes to receive but thinks themselves in mortal sin, it is best to request the sacrament of Confession from a priest before the ceremony. It is highly encouraged to receive the Holy Eucharist, especially in order to offer it for the repose of the deceased.