Orthodox churches recognized by Catholic Church Which Orthodox churches are recognized by the Catholic church? Are there any churches older than the split that are not recognized by the Catholic Church and that are still active?

Edit: "recognize" can be exemplified by that it is possible for an orthodox to receive a sacrament from a catholic priest.
The Catholic Church allows both Oriental Orthodox and Eastern Orthodox churches to receive the sacrament if they request it of their own accord and are properly disposed. However, both Orthodox groups don't recognize that and tell their members they should not.

This came up in my Bulgarian friend's wedding.  His wife is Catholic and he's Orthodox; the church was willing to let his parents take the sacrament but they refused it on that basis.

The Catholics consider the Orthodox sacraments to be valid, but not so much vice versa, is the problem.